摘要：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>模拟智能在线客服</title> <style> li{ list-style: none; }
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>模拟智能在线客服</title>
<style>
li{
list-style: none;
}
div:nth-child(1) {
width: 450px;
height: 650px;
background-color: lightskyblue;
margin: 30px auto;
color: #333;
box-shadow: 2px 2px 2px #888888;
}
h2 {
text-align: center;
margin-bottom: -10px;
}
div:nth-child(2) {
width: 400px;
height: 500px;
border: 4px double green;
background-color: #efefef;
margin: 20px auto 10px;
}
ul {
line-height: 2em;
overflow: hidden;
padding: 15px;
}
table {
width: 90%;
height: 80px;
margin: auto;
}
textarea {
border: none;
resize: none;
background-color: lightyellow;
}
button {
width: 60px;
height: 40px;
color: #fff;
background-color: seagreen;
border: none;
}
button:hover {
cursor: pointer;
background-color: orange;
}
</style>
</head>
<body>
<div>
<h2>在线客服</h2>
<div>
<ul>
<li></li>
</ul>
</div>
<table>
<tr>
<td><textarea name="text" cols="50" rows="4"></textarea></td>
<td><button type="button">发送</button></td>
</tr>
</table>
</div>
<script>
var btn = document.getElementsByTagName('button')[0];
var text = document.getElementsByName('text')[0];
var list = document.getElementsByTagName('ul')[0];
var sum = 0;
btn.onclick = function(){
if (text.value.length === 0) {
alert("空")
return false;
}
var userComment = text.value;//保存
text.value = ' ';
var li = document.createElement('li');
li.innerHTML = userComment;
var userFace = '<img src="jiadian1.jpg" style="width:30px;height:30px;border-radius:50%">';
li.innerHTML = userFace+' '+userComment;
list.appendChild(li);
sum += 1;
// 设定定时器两秒之后自动回复
setTimeout(function(){
var info = [
"你好",
"欢迎光临",
"你慢走",
"有空再来",
"吃屎啦你，梁非凡"
]
var tmp = info[Math.floor(Math.random()*4)];
var replay = document.createElement('li');
var kefuFace = '<img src="jiadian1.jpg" style="width:30px;height:30px;border-radius:50%">';
replay.innerHTML = kefuFace+' '+'<span style="color:red">'+tmp+'</span>';
list.appendChild(replay);
sum += 1;
},2000)
//清空窗口并将计数器清空
if(sum>10){
list.innerHTML = '';
sum = 0;
}
}
</script>
</body>
</html>
批改老师：天蓬老师批改时间：2018-11-18 17:42:44
老师总结：作业完成的不错。美中不足的是：页面中出现了好几个全局变量。
