摘要：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>微博输入</title> <style> body{font-size: 12px;} .box{width: 600px;height
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>微博输入</title>
<style>
body{font-size: 12px;}
.box{width: 600px;height: 160px;border: 10px solid pink;margin:0px auto;padding: 10px;}
img{float: left;}
.box1{float: left;margin-left: 200px;width:150px;height:24px;text-align: right;font-size: 14px;color: #888;}
.box1 span{font-size: 16px;font-weight: bold;}
#text{width: 600px;height: 100px;border: 1px solid #ccc;margin-top: 5px;}
.box #sp1,#sp2,#sp3,#sp4,#sp5,#sp6{float: left;width: 34px;height: 32px;line-height: 32px;padding-left: 26px;}
#sp1{background: url(images/biaoq1.png) no-repeat left center;}
#sp2{background: url(images/tupian1.png) no-repeat left center;}
#sp3{background: url(images/shiping1.png) no-repeat left center;}
#sp4{background: url(images/huati1.png) no-repeat left center;}
#sp5{background: url(images/changwb1.png) no-repeat left center;width: 44px;}
#sp6{margin-left: 135px;margin-right: 15px;color: #888}
#bt{float: left;width: 80px;height: 30px;border: none;background: #ffc09f;color: #fff;border-radius: 5px;}
</style>
<script type="text/javascript">
var text,number,m
window.onload=function(){
text=document.getElementById("text")
number=document.getElementById("number")
bt=document.getElementById("bt")
text.onkeyup=function aa(){
m=140-text.value.length//微博限制字数是140字
if(m<0){
number.style.color="red"
}else{
number.style.color="#888"
}
number.innerHTML=m
}
bt.onclick=function(){
if(m==140){
alert("您还没有输入")
text.focus()
}else if(m<0){
alert("您输入的字数过多，不可以发布")
text.focus()
}else{
alert("发布成功")
}
}
}
</script>
</head>
<body>
<div>
<img src="images/xin.png" alt="">
<div>还可以输入<span id="number"></span>字</div>
<textarea id="text"></textarea><!-- 文本域 -->
<span id="sp1">表情</span>
<span id="sp2">图片</span>
<span id="sp3">视频</span>
<span id="sp4">话题</span>
<span id="sp5">长微博</span>
<span id="sp6">公开</span>
<input type="button" value="发布" id="bt" onclick="aa()">
</div>
</body>
</html>
批改老师：韦小宝批改时间：2018-11-19 09:19:35
老师总结：很不错啊！但是还是缺少总结！继续加油吧！
