在线客服案例实现
玄夜、2019-01-10 10:02:31156<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<style>
.div{height: 800px;width: 500px;border:1px solid #CCCCCC;margin:auto;background:#FAFAFA;}
.div h3{text-align: center;height: 80px;width: 100%;background: cornflowerblue;color: #FFFFFF;line-height: 80px;margin: 0;}
.div1{height:650px;width:100%;}
.div1 ul{list-style-type: none;}
.div1 ul li{line-height: 50px;}
.div2{height: 70px;width: 100%;text-align: center;}
.div2 input{height: 30px;width: 400px;border:1px solid #C3C5C6;}
.div2 button{height: 35px;width: 80px;background: #C3C5C6;border:none;color: #FFFFFF;}
</style>
<body>
<div class="div">
<h3>在线客服</h3>
<div class="div1">
<ul></ul>
</div>
<div class="div2">
<input type="text" name="input">
<button onclick="submit()">发送</button>
</div>
</div>
</body>
<script>
var input = document.getElementsByTagName('input')[0];
var ul = document.getElementsByTagName('ul')[0];
function submit(){
var li = document.createElement('li');
if(input.value!=''){
li.innerHTML = input.value;
ul.appendChild(li);
input.value = '';
}else{
alert('请输入信息！');
input.focus();
}
}
</script>
</html>