<span style="color: #008080"> 1</span> <!DOCTYPE html>
<span style="color: #008080"> 2</span> <html>
<span style="color: #008080"> 3</span> <head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<span style="color: #008080"> 4</span> <title>HTML5烟花燃放特效代码</title>
<span style="color: #008080"> 5</span>
<span style="color: #008080"> 6</span> <style>
<span style="color: #008080"> 7</span> html,body{height:100%;margin:0;padding:0<span style="color: #000000">}
</span><span style="color: #008080"> 8</span> ul,li{text-indent:0;text-decoration:none;margin:0;padding:0<span style="color: #000000">}
</span><span style="color: #008080"> 9</span> img{border:0<span style="color: #000000">}
</span><span style="color: #008080"> 10</span> body{background-color:#000;color:#999;font:100%/18px helvetica, arial, sans-serif}
<span style="color: #008080"> 11</span> canvas{cursor:crosshair;display:block;left:0;position:absolute;top:0;z-index:20<span style="color: #000000">}
</span><span style="color: #008080"> 12</span> *<span style="color: #000000">{
</span><span style="color: #008080"> 13</span> <span style="color: #000000"> margin: 0px;
</span><span style="color: #008080"> 14</span> <span style="color: #000000"> padding: 0px;
</span><span style="color: #008080"> 15</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 16</span> <span style="color: #000000"> #bg_Img{
</span><span style="color: #008080"> 17</span> <span style="color: #000000"> width: 1920px;
</span><span style="color: #008080"> 18</span> <span style="color: #000000"> height: 1500px;
</span><span style="color: #008080"> 19</span> <span style="color: #000000"> border: 1px solid transparent;
</span><span style="color: #008080"> 20</span> background: url("start.gif"<span style="color: #000000">) repeat;
</span><span style="color: #008080"> 21</span> text-<span style="color: #000000">align: center;
</span><span style="color: #008080"> 22</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 23</span> <span style="color: #000000"> ul{
</span><span style="color: #008080"> 24</span> <span style="color: #000000"> width: 5555px;
</span><span style="color: #008080"> 25</span> <span style="color: #000000"> height: 200px;
</span><span style="color: #008080"> 26</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 27</span> <span style="color: #000000"> li{
</span><span style="color: #008080"> 28</span> font: 120px/190px "楷体";
<span style="color: #008080"> 29</span> <span style="color: #000000"> color: white;
</span><span style="color: #008080"> 30</span> text-<span style="color: #000000">shadow: 5px 10px 10px 10px;
</span><span style="color: #008080"> 31</span> list-<span style="color: #000000">style: none;
</span><span style="color: #008080"> 32</span> <span style="color: #0000ff">float</span><span style="color: #000000">: left;
</span><span style="color: #008080"> 33</span> <span style="color: #000000"> display: none;
</span><span style="color: #008080"> 34</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 35</span> <span style="color: #000000"> #text_bd{
</span><span style="color: #008080"> 36</span> <span style="color: #000000"> width: 600px;
</span><span style="color: #008080"> 37</span> <span style="color: #000000"> height: 200px;
</span><span style="color: #008080"> 38</span> <span style="color: #000000"> border: 5px solid transparent;
</span><span style="color: #008080"> 39</span> margin-<span style="color: #000000">left: 200px;
</span><span style="color: #008080"> 40</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 41</span> <span style="color: #000000"> #mouse_click{
</span><span style="color: #008080"> 42</span> <span style="color: #000000"> margin: 0px auto;
</span><span style="color: #008080"> 43</span> text-<span style="color: #000000">align: center;
</span><span style="color: #008080"> 44</span> <span style="color: #000000"> color: white;
</span><span style="color: #008080"> 45</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 46</span> </style>
<span style="color: #008080"> 47</span>
<span style="color: #008080"> 48</span> </head>
<span style="color: #008080"> 49</span> <body>
<span style="color: #008080"> 50</span> <div id="bg_Img">
<span style="color: #008080"> 51</span> <div id="text_bd">
<span style="color: #008080"> 52</span> <ul>
<span style="color: #008080"> 53</span> <li>O(∩_∩)O~~</li>
<span style="color: #008080"> 54</span> <li>同</li>
<span style="color: #008080"> 55</span> <li>学</li>
<span style="color: #008080"> 56</span> <li>们</li>
<span style="color: #008080"> 57</span> <li>节</li>
<span style="color: #008080"> 58</span> <li>日</li>
<span style="color: #008080"> 59</span> <li>快</li>
<span style="color: #008080"> 60</span> <li>乐</li>
<span style="color: #008080"> 61</span> <li>~~</li>
<span style="color: #008080"> 62</span> </ul>
<span style="color: #008080"> 63</span> </div>
<span style="color: #008080"> 64</span> <div id="mouse_click">鼠标点击释放烟花效果</div>
<span style="color: #008080"> 65</span> </div>
<span style="color: #008080"> 66</span> <script type="text/javascript" src="jquery-3.1.1.js"></script>
<span style="color: #008080"> 67</span> <script type="text/javascript">
<span style="color: #008080"> 68</span> <span style="color: #0000ff">var</span> aLi=document.querySelectorAll("li"<span style="color: #000000">);
</span><span style="color: #008080"> 69</span> setInterval(a,1000<span style="color: #000000">);
</span><span style="color: #008080"> 70</span> setInterval(b,2000<span style="color: #000000">);
</span><span style="color: #008080"> 71</span> setInterval(c,3000<span style="color: #000000">);
</span><span style="color: #008080"> 72</span> setInterval(d,4000<span style="color: #000000">);
</span><span style="color: #008080"> 73</span> setInterval(e,5000<span style="color: #000000">);
</span><span style="color: #008080"> 74</span> setInterval(f,6000<span style="color: #000000">);
</span><span style="color: #008080"> 75</span> setInterval(g,7000<span style="color: #000000">);
</span><span style="color: #008080"> 76</span> setInterval(h,8000<span style="color: #000000">);
</span><span style="color: #008080"> 77</span> <span style="color: #0000ff">function</span><span style="color: #000000"> a() {
</span><span style="color: #008080"> 78</span> aLi[0].style.display = "block"
<span style="color: #008080"> 79</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 80</span> <span style="color: #0000ff">function</span><span style="color: #000000"> b() {
</span><span style="color: #008080"> 81</span> aLi[1].style.display = "block"
<span style="color: #008080"> 82</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 83</span> <span style="color: #0000ff">function</span><span style="color: #000000"> c() {
</span><span style="color: #008080"> 84</span> aLi[2].style.display = "block"
<span style="color: #008080"> 85</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 86</span> <span style="color: #0000ff">function</span><span style="color: #000000"> d() {
</span><span style="color: #008080"> 87</span> aLi[3].style.display = "block"
<span style="color: #008080"> 88</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 89</span> <span style="color: #0000ff">function</span><span style="color: #000000"> e() {
</span><span style="color: #008080"> 90</span> aLi[4].style.display = "block"
<span style="color: #008080"> 91</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 92</span> <span style="color: #0000ff">function</span><span style="color: #000000"> f() {
</span><span style="color: #008080"> 93</span> aLi[5].style.display = "block"
<span style="color: #008080"> 94</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 95</span> <span style="color: #0000ff">function</span><span style="color: #000000"> g() {
</span><span style="color: #008080"> 96</span> aLi[6].style.display = "block"
<span style="color: #008080"> 97</span> <span style="color: #000000"> }
</span><span style="color: #008080"> 98</span> <span style="color: #0000ff">function</span><span style="color: #000000"> h() {
</span><span style="color: #008080"> 99</span> aLi[7].style.display = "block"
<span style="color: #008080">100</span> <span style="color: #000000"> }
</span><span style="color: #008080">101</span> $(<span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">102</span> <span style="color: #0000ff">var</span> Fireworks = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">103</span> <span style="color: #0000ff">var</span> self = <span style="color: #0000ff">this</span><span style="color: #000000">;
</span><span style="color: #008080">104</span> <span style="color: #0000ff">var</span> rand = <span style="color: #0000ff">function</span>(rMi, rMa){<span style="color: #0000ff">return</span> ~~((Math.random()*(rMa-rMi+1))+<span style="color: #000000">rMi);}
</span><span style="color: #008080">105</span> <span style="color: #0000ff">var</span> hitTest = <span style="color: #0000ff">function</span>(x1, y1, w1, h1, x2, y2, w2, h2){<span style="color: #0000ff">return</span> !(x1 + w1 < x2 || x2 + w2 < x1 || y1 + h1 < y2 || y2 + h2 <<span style="color: #000000"> y1);};
</span><span style="color: #008080">106</span> window.requestAnimFrame=<span style="color: #0000ff">function</span>(){<span style="color: #0000ff">return</span> window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||<span style="color: #0000ff">function</span>(a){window.setTimeout(a,1E3/60)}}();
<span style="color: #008080">107</span>
<span style="color: #008080">108</span> self.init = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">109</span> self.canvas = document.createElement('canvas'<span style="color: #000000">);
</span><span style="color: #008080">110</span> self.canvas.width = self.cw =<span style="color: #000000"> $(window).innerWidth();
</span><span style="color: #008080">111</span> self.canvas.height = self.ch =<span style="color: #000000"> $(window).innerHeight();
</span><span style="color: #008080">112</span> self.particles =<span style="color: #000000"> [];
</span><span style="color: #008080">113</span> self.partCount = 150<span style="color: #000000">;
</span><span style="color: #008080">114</span> self.fireworks =<span style="color: #000000"> [];
</span><span style="color: #008080">115</span> self.mx = self.cw/2;
<span style="color: #008080">116</span> self.my = self.ch/2;
<span style="color: #008080">117</span> self.currentHue = 30<span style="color: #000000">;
</span><span style="color: #008080">118</span> self.partSpeed = 5<span style="color: #000000">;
</span><span style="color: #008080">119</span> self.partSpeedVariance = 10<span style="color: #000000">;
</span><span style="color: #008080">120</span> self.partWind = 50<span style="color: #000000">;
</span><span style="color: #008080">121</span> self.partFriction = 5<span style="color: #000000">;
</span><span style="color: #008080">122</span> self.partGravity = 1<span style="color: #000000">;
</span><span style="color: #008080">123</span> self.hueMin = 0<span style="color: #000000">;
</span><span style="color: #008080">124</span> self.hueMax = 360<span style="color: #000000">;
</span><span style="color: #008080">125</span> self.fworkSpeed = 4<span style="color: #000000">;
</span><span style="color: #008080">126</span> self.fworkAccel = 10<span style="color: #000000">;
</span><span style="color: #008080">127</span> self.hueVariance = 30<span style="color: #000000">;
</span><span style="color: #008080">128</span> self.flickerDensity = 25<span style="color: #000000">;
</span><span style="color: #008080">129</span> self.showShockwave = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">130</span> self.showTarget = <span style="color: #0000ff">false</span><span style="color: #000000">;
</span><span style="color: #008080">131</span> self.clearAlpha = 25<span style="color: #000000">;
</span><span style="color: #008080">132</span>
<span style="color: #008080">133</span> <span style="color: #000000"> $(document.body).append(self.canvas);
</span><span style="color: #008080">134</span> self.ctx = self.canvas.getContext('2d'<span style="color: #000000">);
</span><span style="color: #008080">135</span> self.ctx.lineCap = 'round'<span style="color: #000000">;
</span><span style="color: #008080">136</span> self.ctx.lineJoin = 'round'<span style="color: #000000">;
</span><span style="color: #008080">137</span> self.lineWidth = 1<span style="color: #000000">;
</span><span style="color: #008080">138</span> <span style="color: #000000"> self.bindEvents();
</span><span style="color: #008080">139</span> <span style="color: #000000"> self.canvasLoop();
</span><span style="color: #008080">140</span>
<span style="color: #008080">141</span> self.canvas.onselectstart = <span style="color: #0000ff">function</span><span style="color: #000000">() {
</span><span style="color: #008080">142</span> <span style="color: #0000ff">return</span> <span style="color: #0000ff">false</span><span style="color: #000000">;
</span><span style="color: #008080">143</span> <span style="color: #000000"> };
</span><span style="color: #008080">144</span> <span style="color: #000000"> };
</span><span style="color: #008080">145</span>
<span style="color: #008080">146</span> self.createParticles = <span style="color: #0000ff">function</span><span style="color: #000000">(x,y, hue){
</span><span style="color: #008080">147</span> <span style="color: #0000ff">var</span> countdown =<span style="color: #000000"> self.partCount;
</span><span style="color: #008080">148</span> <span style="color: #0000ff">while</span>(countdown--<span style="color: #000000">){
</span><span style="color: #008080">149</span> <span style="color: #0000ff">var</span> newParticle =<span style="color: #000000"> {
</span><span style="color: #008080">150</span> <span style="color: #000000"> x: x,
</span><span style="color: #008080">151</span> <span style="color: #000000"> y: y,
</span><span style="color: #008080">152</span> <span style="color: #000000"> coordLast: [
</span><span style="color: #008080">153</span> <span style="color: #000000"> {x: x, y: y},
</span><span style="color: #008080">154</span> <span style="color: #000000"> {x: x, y: y},
</span><span style="color: #008080">155</span> <span style="color: #000000"> {x: x, y: y}
</span><span style="color: #008080">156</span> <span style="color: #000000"> ],
</span><span style="color: #008080">157</span> angle: rand(0, 360<span style="color: #000000">),
</span><span style="color: #008080">158</span> speed: rand(((self.partSpeed - self.partSpeedVariance) <= 0) ? 1 : self.partSpeed - self.partSpeedVariance, (self.partSpeed +<span style="color: #000000"> self.partSpeedVariance)),
</span><span style="color: #008080">159</span> friction: 1 - self.partFriction/100,
<span style="color: #008080">160</span> gravity: self.partGravity/2,
<span style="color: #008080">161</span> hue: rand(hue-self.hueVariance, hue+<span style="color: #000000">self.hueVariance),
</span><span style="color: #008080">162</span> brightness: rand(50, 80<span style="color: #000000">),
</span><span style="color: #008080">163</span> alpha: rand(40,100)/100,
<span style="color: #008080">164</span> decay: rand(10, 50)/1000,
<span style="color: #008080">165</span> wind: (rand(0, self.partWind) - (self.partWind/2))/25<span style="color: #000000">,
</span><span style="color: #008080">166</span> <span style="color: #000000"> lineWidth: self.lineWidth
</span><span style="color: #008080">167</span> <span style="color: #000000"> };
</span><span style="color: #008080">168</span> <span style="color: #000000"> self.particles.push(newParticle);
</span><span style="color: #008080">169</span> <span style="color: #000000"> }
</span><span style="color: #008080">170</span> <span style="color: #000000"> };
</span><span style="color: #008080">171</span>
<span style="color: #008080">172</span>
<span style="color: #008080">173</span> self.updateParticles = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">174</span> <span style="color: #0000ff">var</span> i =<span style="color: #000000"> self.particles.length;
</span><span style="color: #008080">175</span> <span style="color: #0000ff">while</span>(i--<span style="color: #000000">){
</span><span style="color: #008080">176</span> <span style="color: #0000ff">var</span> p =<span style="color: #000000"> self.particles[i];
</span><span style="color: #008080">177</span> <span style="color: #0000ff">var</span> radians = p.angle * Math.PI / 180<span style="color: #000000">;
</span><span style="color: #008080">178</span> <span style="color: #0000ff">var</span> vx = Math.cos(radians) *<span style="color: #000000"> p.speed;
</span><span style="color: #008080">179</span> <span style="color: #0000ff">var</span> vy = Math.sin(radians) *<span style="color: #000000"> p.speed;
</span><span style="color: #008080">180</span> p.speed *=<span style="color: #000000"> p.friction;
</span><span style="color: #008080">181</span>
<span style="color: #008080">182</span> p.coordLast[2].x = p.coordLast[1<span style="color: #000000">].x;
</span><span style="color: #008080">183</span> p.coordLast[2].y = p.coordLast[1<span style="color: #000000">].y;
</span><span style="color: #008080">184</span> p.coordLast[1].x = p.coordLast[0<span style="color: #000000">].x;
</span><span style="color: #008080">185</span> p.coordLast[1].y = p.coordLast[0<span style="color: #000000">].y;
</span><span style="color: #008080">186</span> p.coordLast[0].x =<span style="color: #000000"> p.x;
</span><span style="color: #008080">187</span> p.coordLast[0].y =<span style="color: #000000"> p.y;
</span><span style="color: #008080">188</span>
<span style="color: #008080">189</span> p.x +=<span style="color: #000000"> vx;
</span><span style="color: #008080">190</span> p.y +=<span style="color: #000000"> vy;
</span><span style="color: #008080">191</span> p.y +=<span style="color: #000000"> p.gravity;
</span><span style="color: #008080">192</span>
<span style="color: #008080">193</span> p.angle +=<span style="color: #000000"> p.wind;
</span><span style="color: #008080">194</span> p.alpha -=<span style="color: #000000"> p.decay;
</span><span style="color: #008080">195</span>
<span style="color: #008080">196</span> <span style="color: #0000ff">if</span>(!hitTest(0,0,self.cw,self.ch,p.x-p.radius, p.y-p.radius, p.radius*2, p.radius*2) || p.alpha < .05<span style="color: #000000">){
</span><span style="color: #008080">197</span> self.particles.splice(i, 1<span style="color: #000000">);
</span><span style="color: #008080">198</span> <span style="color: #000000"> }
</span><span style="color: #008080">199</span> <span style="color: #000000"> };
</span><span style="color: #008080">200</span> <span style="color: #000000"> };
</span><span style="color: #008080">201</span>
<span style="color: #008080">202</span> self.drawParticles = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">203</span> <span style="color: #0000ff">var</span> i =<span style="color: #000000"> self.particles.length;
</span><span style="color: #008080">204</span> <span style="color: #0000ff">while</span>(i--<span style="color: #000000">){
</span><span style="color: #008080">205</span> <span style="color: #0000ff">var</span> p =<span style="color: #000000"> self.particles[i];
</span><span style="color: #008080">206</span>
<span style="color: #008080">207</span> <span style="color: #0000ff">var</span> coordRand = (rand(1,3)-1<span style="color: #000000">);
</span><span style="color: #008080">208</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">209</span> <span style="color: #000000"> self.ctx.moveTo(Math.round(p.coordLast[coordRand].x), Math.round(p.coordLast[coordRand].y));
</span><span style="color: #008080">210</span> <span style="color: #000000"> self.ctx.lineTo(Math.round(p.x), Math.round(p.y));
</span><span style="color: #008080">211</span> <span style="color: #000000"> self.ctx.closePath();
</span><span style="color: #008080">212</span> self.ctx.strokeStyle = 'hsla('+p.hue+', 100%, '+p.brightness+'%, '+p.alpha+')'<span style="color: #000000">;
</span><span style="color: #008080">213</span> <span style="color: #000000"> self.ctx.stroke();
</span><span style="color: #008080">214</span>
<span style="color: #008080">215</span> <span style="color: #0000ff">if</span>(self.flickerDensity > 0<span style="color: #000000">){
</span><span style="color: #008080">216</span> <span style="color: #0000ff">var</span> inverseDensity = 50 -<span style="color: #000000"> self.flickerDensity;
</span><span style="color: #008080">217</span> <span style="color: #0000ff">if</span>(rand(0, inverseDensity) ===<span style="color: #000000"> inverseDensity){
</span><span style="color: #008080">218</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">219</span> self.ctx.arc(Math.round(p.x), Math.round(p.y), rand(p.lineWidth,p.lineWidth+3)/2, 0, Math.PI*2, false)
<span style="color: #008080">220</span> <span style="color: #000000"> self.ctx.closePath();
</span><span style="color: #008080">221</span> <span style="color: #0000ff">var</span> randAlpha = rand(50,100)/100;
<span style="color: #008080">222</span> self.ctx.fillStyle = 'hsla('+p.hue+', 100%, '+p.brightness+'%, '+randAlpha+')'<span style="color: #000000">;
</span><span style="color: #008080">223</span> <span style="color: #000000"> self.ctx.fill();
</span><span style="color: #008080">224</span> <span style="color: #000000"> }
</span><span style="color: #008080">225</span> <span style="color: #000000"> }
</span><span style="color: #008080">226</span> <span style="color: #000000"> };
</span><span style="color: #008080">227</span> <span style="color: #000000"> };
</span><span style="color: #008080">228</span>
<span style="color: #008080">229</span>
<span style="color: #008080">230</span> self.createFireworks = <span style="color: #0000ff">function</span><span style="color: #000000">(startX, startY, targetX, targetY){
</span><span style="color: #008080">231</span> <span style="color: #0000ff">var</span> newFirework =<span style="color: #000000"> {
</span><span style="color: #008080">232</span> <span style="color: #000000"> x: startX,
</span><span style="color: #008080">233</span> <span style="color: #000000"> y: startY,
</span><span style="color: #008080">234</span> <span style="color: #000000"> startX: startX,
</span><span style="color: #008080">235</span> <span style="color: #000000"> startY: startY,
</span><span style="color: #008080">236</span> hitX: <span style="color: #0000ff">false</span><span style="color: #000000">,
</span><span style="color: #008080">237</span> hitY: <span style="color: #0000ff">false</span><span style="color: #000000">,
</span><span style="color: #008080">238</span> <span style="color: #000000"> coordLast: [
</span><span style="color: #008080">239</span> <span style="color: #000000"> {x: startX, y: startY},
</span><span style="color: #008080">240</span> <span style="color: #000000"> {x: startX, y: startY},
</span><span style="color: #008080">241</span> <span style="color: #000000"> {x: startX, y: startY}
</span><span style="color: #008080">242</span> <span style="color: #000000"> ],
</span><span style="color: #008080">243</span> <span style="color: #000000"> targetX: targetX,
</span><span style="color: #008080">244</span> <span style="color: #000000"> targetY: targetY,
</span><span style="color: #008080">245</span> <span style="color: #000000"> speed: self.fworkSpeed,
</span><span style="color: #008080">246</span> angle: Math.atan2(targetY - startY, targetX -<span style="color: #000000"> startX),
</span><span style="color: #008080">247</span> shockwaveAngle: Math.atan2(targetY - startY, targetX - startX)+(90*(Math.PI/180)),
<span style="color: #008080">248</span> acceleration: self.fworkAccel/100,
<span style="color: #008080">249</span> <span style="color: #000000"> hue: self.currentHue,
</span><span style="color: #008080">250</span> brightness: rand(50, 80<span style="color: #000000">),
</span><span style="color: #008080">251</span> alpha: rand(50,100)/100,
<span style="color: #008080">252</span> <span style="color: #000000"> lineWidth: self.lineWidth
</span><span style="color: #008080">253</span> <span style="color: #000000"> };
</span><span style="color: #008080">254</span> <span style="color: #000000"> self.fireworks.push(newFirework);
</span><span style="color: #008080">255</span>
<span style="color: #008080">256</span> <span style="color: #000000"> };
</span><span style="color: #008080">257</span>
<span style="color: #008080">258</span>
<span style="color: #008080">259</span> self.updateFireworks = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">260</span> <span style="color: #0000ff">var</span> i =<span style="color: #000000"> self.fireworks.length;
</span><span style="color: #008080">261</span>
<span style="color: #008080">262</span> <span style="color: #0000ff">while</span>(i--<span style="color: #000000">){
</span><span style="color: #008080">263</span> <span style="color: #0000ff">var</span> f =<span style="color: #000000"> self.fireworks[i];
</span><span style="color: #008080">264</span> self.ctx.lineWidth =<span style="color: #000000"> f.lineWidth;
</span><span style="color: #008080">265</span>
<span style="color: #008080">266</span> vx = Math.cos(f.angle) *<span style="color: #000000"> f.speed,
</span><span style="color: #008080">267</span> vy = Math.sin(f.angle) *<span style="color: #000000"> f.speed;
</span><span style="color: #008080">268</span> f.speed *= 1 +<span style="color: #000000"> f.acceleration;
</span><span style="color: #008080">269</span> f.coordLast[2].x = f.coordLast[1<span style="color: #000000">].x;
</span><span style="color: #008080">270</span> f.coordLast[2].y = f.coordLast[1<span style="color: #000000">].y;
</span><span style="color: #008080">271</span> f.coordLast[1].x = f.coordLast[0<span style="color: #000000">].x;
</span><span style="color: #008080">272</span> f.coordLast[1].y = f.coordLast[0<span style="color: #000000">].y;
</span><span style="color: #008080">273</span> f.coordLast[0].x =<span style="color: #000000"> f.x;
</span><span style="color: #008080">274</span> f.coordLast[0].y =<span style="color: #000000"> f.y;
</span><span style="color: #008080">275</span>
<span style="color: #008080">276</span> <span style="color: #0000ff">if</span>(f.startX >=<span style="color: #000000"> f.targetX){
</span><span style="color: #008080">277</span> <span style="color: #0000ff">if</span>(f.x + vx <=<span style="color: #000000"> f.targetX){
</span><span style="color: #008080">278</span> f.x =<span style="color: #000000"> f.targetX;
</span><span style="color: #008080">279</span> f.hitX = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">280</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">281</span> f.x +=<span style="color: #000000"> vx;
</span><span style="color: #008080">282</span> <span style="color: #000000"> }
</span><span style="color: #008080">283</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">284</span> <span style="color: #0000ff">if</span>(f.x + vx >=<span style="color: #000000"> f.targetX){
</span><span style="color: #008080">285</span> f.x =<span style="color: #000000"> f.targetX;
</span><span style="color: #008080">286</span> f.hitX = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">287</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">288</span> f.x +=<span style="color: #000000"> vx;
</span><span style="color: #008080">289</span> <span style="color: #000000"> }
</span><span style="color: #008080">290</span> <span style="color: #000000"> }
</span><span style="color: #008080">291</span>
<span style="color: #008080">292</span> <span style="color: #0000ff">if</span>(f.startY >=<span style="color: #000000"> f.targetY){
</span><span style="color: #008080">293</span> <span style="color: #0000ff">if</span>(f.y + vy <=<span style="color: #000000"> f.targetY){
</span><span style="color: #008080">294</span> f.y =<span style="color: #000000"> f.targetY;
</span><span style="color: #008080">295</span> f.hitY = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">296</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">297</span> f.y +=<span style="color: #000000"> vy;
</span><span style="color: #008080">298</span> <span style="color: #000000"> }
</span><span style="color: #008080">299</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">300</span> <span style="color: #0000ff">if</span>(f.y + vy >=<span style="color: #000000"> f.targetY){
</span><span style="color: #008080">301</span> f.y =<span style="color: #000000"> f.targetY;
</span><span style="color: #008080">302</span> f.hitY = <span style="color: #0000ff">true</span><span style="color: #000000">;
</span><span style="color: #008080">303</span> } <span style="color: #0000ff">else</span><span style="color: #000000"> {
</span><span style="color: #008080">304</span> f.y +=<span style="color: #000000"> vy;
</span><span style="color: #008080">305</span> <span style="color: #000000"> }
</span><span style="color: #008080">306</span> <span style="color: #000000"> }
</span><span style="color: #008080">307</span>
<span style="color: #008080">308</span> <span style="color: #0000ff">if</span>(f.hitX &&<span style="color: #000000"> f.hitY){
</span><span style="color: #008080">309</span> <span style="color: #000000"> self.createParticles(f.targetX, f.targetY, f.hue);
</span><span style="color: #008080">310</span> self.fireworks.splice(i, 1<span style="color: #000000">);
</span><span style="color: #008080">311</span>
<span style="color: #008080">312</span> <span style="color: #000000"> }
</span><span style="color: #008080">313</span> <span style="color: #000000"> };
</span><span style="color: #008080">314</span> <span style="color: #000000"> };
</span><span style="color: #008080">315</span>
<span style="color: #008080">316</span> self.drawFireworks = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">317</span> <span style="color: #0000ff">var</span> i =<span style="color: #000000"> self.fireworks.length;
</span><span style="color: #008080">318</span> self.ctx.globalCompositeOperation = 'lighter'<span style="color: #000000">;
</span><span style="color: #008080">319</span> <span style="color: #0000ff">while</span>(i--<span style="color: #000000">){
</span><span style="color: #008080">320</span> <span style="color: #0000ff">var</span> f =<span style="color: #000000"> self.fireworks[i];
</span><span style="color: #008080">321</span> self.ctx.lineWidth =<span style="color: #000000"> f.lineWidth;
</span><span style="color: #008080">322</span>
<span style="color: #008080">323</span> <span style="color: #0000ff">var</span> coordRand = (rand(1,3)-1<span style="color: #000000">);
</span><span style="color: #008080">324</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">325</span> <span style="color: #000000"> self.ctx.moveTo(Math.round(f.coordLast[coordRand].x), Math.round(f.coordLast[coordRand].y));
</span><span style="color: #008080">326</span> <span style="color: #000000"> self.ctx.lineTo(Math.round(f.x), Math.round(f.y));
</span><span style="color: #008080">327</span> <span style="color: #000000"> self.ctx.closePath();
</span><span style="color: #008080">328</span> self.ctx.strokeStyle = 'hsla('+f.hue+', 100%, '+f.brightness+'%, '+f.alpha+')'<span style="color: #000000">;
</span><span style="color: #008080">329</span> <span style="color: #000000"> self.ctx.stroke();
</span><span style="color: #008080">330</span>
<span style="color: #008080">331</span> <span style="color: #0000ff">if</span><span style="color: #000000">(self.showTarget){
</span><span style="color: #008080">332</span> <span style="color: #000000"> self.ctx.save();
</span><span style="color: #008080">333</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">334</span> self.ctx.arc(Math.round(f.targetX), Math.round(f.targetY), rand(1,8), 0, Math.PI*2, <span style="color: #0000ff">false</span><span style="color: #000000">)
</span><span style="color: #008080">335</span> <span style="color: #000000"> self.ctx.closePath();
</span><span style="color: #008080">336</span> self.ctx.lineWidth = 1<span style="color: #000000">;
</span><span style="color: #008080">337</span> <span style="color: #000000"> self.ctx.stroke();
</span><span style="color: #008080">338</span> <span style="color: #000000"> self.ctx.restore();
</span><span style="color: #008080">339</span> <span style="color: #000000"> }
</span><span style="color: #008080">340</span>
<span style="color: #008080">341</span> <span style="color: #0000ff">if</span><span style="color: #000000">(self.showShockwave){
</span><span style="color: #008080">342</span> <span style="color: #000000"> self.ctx.save();
</span><span style="color: #008080">343</span> <span style="color: #000000"> self.ctx.translate(Math.round(f.x), Math.round(f.y));
</span><span style="color: #008080">344</span> <span style="color: #000000"> self.ctx.rotate(f.shockwaveAngle);
</span><span style="color: #008080">345</span> <span style="color: #000000"> self.ctx.beginPath();
</span><span style="color: #008080">346</span> self.ctx.arc(0, 0, 1*(f.speed/5), 0, Math.PI, true);
<span style="color: #008080">347</span> self.ctx.strokeStyle = 'hsla('+f.hue+', 100%, '+f.brightness+'%, '+rand(25, 60)/100+')';
<span style="color: #008080">348</span> self.ctx.lineWidth =<span style="color: #000000"> f.lineWidth;
</span><span style="color: #008080">349</span> <span style="color: #000000"> self.ctx.stroke();
</span><span style="color: #008080">350</span> <span style="color: #000000"> self.ctx.restore();
</span><span style="color: #008080">351</span> <span style="color: #000000"> }
</span><span style="color: #008080">352</span> <span style="color: #000000"> };
</span><span style="color: #008080">353</span> <span style="color: #000000"> };
</span><span style="color: #008080">354</span>
<span style="color: #008080">355</span> self.bindEvents = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">356</span> $(window).on('resize', <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">357</span> <span style="color: #000000"> clearTimeout(self.timeout);
</span><span style="color: #008080">358</span> self.timeout = setTimeout(<span style="color: #0000ff">function</span><span style="color: #000000">() {
</span><span style="color: #008080">359</span> self.canvas.width = self.cw =<span style="color: #000000"> $(window).innerWidth();
</span><span style="color: #008080">360</span> self.canvas.height = self.ch =<span style="color: #000000"> $(window).innerHeight();
</span><span style="color: #008080">361</span> self.ctx.lineCap = 'round'<span style="color: #000000">;
</span><span style="color: #008080">362</span> self.ctx.lineJoin = 'round'<span style="color: #000000">;
</span><span style="color: #008080">363</span> }, 100<span style="color: #000000">);
</span><span style="color: #008080">364</span> <span style="color: #000000"> });
</span><span style="color: #008080">365</span>
<span style="color: #008080">366</span> $(self.canvas).on('mousedown', <span style="color: #0000ff">function</span><span style="color: #000000">(e){
</span><span style="color: #008080">367</span> self.mx = e.pageX -<span style="color: #000000"> self.canvas.offsetLeft;
</span><span style="color: #008080">368</span> self.my = e.pageY -<span style="color: #000000"> self.canvas.offsetTop;
</span><span style="color: #008080">369</span> self.currentHue =<span style="color: #000000"> rand(self.hueMin, self.hueMax);
</span><span style="color: #008080">370</span> self.createFireworks(self.cw/2, self.ch, self.mx, self.my);
<span style="color: #008080">371</span>
<span style="color: #008080">372</span> $(self.canvas).on('mousemove.fireworks', <span style="color: #0000ff">function</span><span style="color: #000000">(e){
</span><span style="color: #008080">373</span> self.mx = e.pageX -<span style="color: #000000"> self.canvas.offsetLeft;
</span><span style="color: #008080">374</span> self.my = e.pageY -<span style="color: #000000"> self.canvas.offsetTop;
</span><span style="color: #008080">375</span> self.currentHue =<span style="color: #000000"> rand(self.hueMin, self.hueMax);
</span><span style="color: #008080">376</span> self.createFireworks(self.cw/2, self.ch, self.mx, self.my);
<span style="color: #008080">377</span> <span style="color: #000000"> });
</span><span style="color: #008080">378</span> <span style="color: #000000"> });
</span><span style="color: #008080">379</span>
<span style="color: #008080">380</span> $(self.canvas).on('mouseup', <span style="color: #0000ff">function</span><span style="color: #000000">(e){
</span><span style="color: #008080">381</span> $(self.canvas).off('mousemove.fireworks'<span style="color: #000000">);
</span><span style="color: #008080">382</span> <span style="color: #000000"> });
</span><span style="color: #008080">383</span>
<span style="color: #008080">384</span> <span style="color: #000000"> }
</span><span style="color: #008080">385</span>
<span style="color: #008080">386</span> self.clear = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">387</span> self.particles =<span style="color: #000000"> [];
</span><span style="color: #008080">388</span> self.fireworks =<span style="color: #000000"> [];
</span><span style="color: #008080">389</span> self.ctx.clearRect(0, 0<span style="color: #000000">, self.cw, self.ch);
</span><span style="color: #008080">390</span> <span style="color: #000000"> };
</span><span style="color: #008080">391</span>
<span style="color: #008080">392</span>
<span style="color: #008080">393</span> self.canvasLoop = <span style="color: #0000ff">function</span><span style="color: #000000">(){
</span><span style="color: #008080">394</span> <span style="color: #000000"> requestAnimFrame(self.canvasLoop, self.canvas);
</span><span style="color: #008080">395</span> self.ctx.globalCompositeOperation = 'destination-out'<span style="color: #000000">;
</span><span style="color: #008080">396</span> self.ctx.fillStyle = 'rgba(0,0,0,'+self.clearAlpha/100+')';
<span style="color: #008080">397</span> self.ctx.fillRect(0,0<span style="color: #000000">,self.cw,self.ch);
</span><span style="color: #008080">398</span> <span style="color: #000000"> self.updateFireworks();
</span><span style="color: #008080">399</span> <span style="color: #000000"> self.updateParticles();
</span><span style="color: #008080">400</span> <span style="color: #000000"> self.drawFireworks();
</span><span style="color: #008080">401</span> <span style="color: #000000"> self.drawParticles();
</span><span style="color: #008080">402</span>
<span style="color: #008080">403</span> <span style="color: #000000"> };
</span><span style="color: #008080">404</span>
<span style="color: #008080">405</span> <span style="color: #000000"> self.init();
</span><span style="color: #008080">406</span>
<span style="color: #008080">407</span> <span style="color: #000000"> }
</span><span style="color: #008080">408</span> <span style="color: #0000ff">var</span> fworks = <span style="color: #0000ff">new</span><span style="color: #000000"> Fireworks();
</span><span style="color: #008080">409</span>
<span style="color: #008080">410</span> <span style="color: #000000"> });
</span><span style="color: #008080">411</span>
<span style="color: #008080">412</span> </script>
<span style="color: #008080">413</span>
<span style="color: #008080">414</span> </body>
<span style="color: #008080">415</span> </html>广大网友们!因为这是放假的时候老师给发的!所以我也看不太懂有些东西!实在是抱歉 有什么不明白的,就留言告诉我!我去找我曾经的老师问问,虽然他已经退休好久了!!
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