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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>3.实战: 仿机器人聊天窗口</title>
<style type="text/css">
div:nth-child(1) {
width: 450px;
height: 650px;
background-color: lightskyblue;
margin: 30px auto;
color: #333;
box-shadow: 2px 2px 2px #808080
}
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 {
list-style: none;
line-height: 2em;
/*border: 1px solid red;*/
overflow: hidden;
padding: 15px;
}
table {
width: 90%;
height:80px;
margin: auto;
}
textarea{
/*width: 300px;*/
border: none;
resize: none;
background-color: lightyellow;
}
button {
width: 60px;
height: 40px;
background-color: seagreen;
color: white;
border: none;
/*text-align: left;*/
}
button:hover {
cursor: pointer;
background-color: orange;
}
</style>
</head>
<body>
<div>
<h2>在线客服</h2>
<div contenteditable="true">
<ul>
<li></li>
</ul>
</div>
<table>
<tr>
<td align="right"><textarea cols="50" rows="4" name="text"></textarea></td>
<td align="left"><button type=button>发送</button></td>
</tr>
</table>
</div>
<script type="text/javascript">
//获取到页面中的按钮,文本域,对话内容区
var btn = document.getElementsByTagName('button')[0]
var text = document.getElementsByName('text')[0]
var list = document.getElementsByTagName('ul')[0]
var sum = 0
//添加按钮点击事件,获取用户数据并推送到对话窗口中
btn.onclick = function () {
// alert(text.value)
//获取用户提交的内容
if (text.value.length == 0) {
alert('客官:是不是忘记输入内容了~~')
return false
}
var userComment = text.value
//立即清空用户信息区
text.value = ''
//创建一个新节点li
var li = document.createElement('li')
li.innerHTML = userComment
var userPic = '<img src="../images/peter.jpg" width="30" style="border-radius:50%">'
li.innerHTML = userPic+userComment
//将新节点插入到对话列表中
list.appendChild(li)
sum += 1
setTimeout(function(){
var info = ['你好烦人呀,本姑娘好累,不知道怜香惜玉吗?','除了退货,退款,维修,什么问题都可以问','啥事呀,我的帅哥哥']
var temp = info[Math.floor(Math.random()*3)]
//取1-5之间的一个整数:Math.floor(Math.random()*6 + 1)
var reply = document.createElement('li')
var kefuPic = '<img src="../images/zly.jpg" width="30" style="border-radius:50%;">'
// reply.innerHTML = '你有啥事呀,我的帅哥哥' +kefuPic
reply.innerHTML = kefuPic + '<span style="color:red">'+temp+'</span>'
// reply.style.float = 'right'
list.appendChild(reply)
sum += 1
},2000)
if (sum > 10) {
list.innerHTML = ''
sum = 0
}
}
</script>
</body>
</html>点击 "运行实例" 按钮查看在线实例
手写代码：
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