1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>Document</title>
6 </head>
7 <style type="text/css">
8 ul{
9 width: 100%;
10 height: 50px;
11 line-height: 50px;
12 overflow: visible;
13
14 }
15 .active{
16 overflow: hidden;
17 }
18 li {
19 float: left;
20 width:100px;
21 color: #f1f1f1;
22 font-size: 18px;
23 background-color: green;
24 margin-left: 50px;
25 padding-left: 20px;
26 margin-top: 10px;
27 list-style: none;
28
29 }
30 span{
31 display: inline-block;
32 margin-left: 10px;
33 font-size: 18px;
34 color: #ccc;
35 line-height: 30px;
36
37 }
38 </style>
39
40 <body>
41 <div id="app">
42 <ul :class="{active:flag}">
43 <li v-for="todo in todos">{{todo.text}}
44
45 </li>
46 <p v-if ="todos.length>6" @click = "showTag"><span>{{flag?"展开":"收起"}}</span></p>
47 </ul>
48
49 </div>
50 </body>
51 <script src="https://cdn.jsdelivr.net/npm/vue"></script>
52 <script type="text/javascript">
53 var app = new Vue({
54 el: '#app',
55 data: {
56 todos:[{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'}],
57 flag:true
58 },
59 methods:{
60 showTag(){
61 this.flag = !this.flag
62 }
63 }
64 })
65 </script>
66 </html>点击展开之后：主要用到的属性有ovflow属性，以及vue的动态绑定class
注：如果是自适应的就要读取浏览器的宽度了，6就要换成浏览器的宽度了，代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<style type="text/css">
ul{
width: 100%;
height: 50px;
line-height: 50px;
overflow: visible;
}
.active{
overflow: hidden;
}
li {
float: left;
width:100px;
color: #f1f1f1;
font-size: 18px;
background-color: green;
margin-left: 50px;
padding-left: 20px;
margin-top: 10px;
list-style: none;
}
span{
display: inline-block;
margin-left: 10px;
font-size: 18px;
color: #ccc;
line-height: 30px;
}
</style>
<body>
<div id="app">
<ul :class="{active:flag}">
<li v-for="todo in todos">{{todo.text}}
</li>
<p v-if ="todos.length>6" @click = "showTag"><span>{{flag?"展开":"收起"}}</span></p>
</ul>
</div>
</body>
<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<script type="text/javascript">
var app = new Vue({
el: '#app',
data: {
todos:[{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'},{text:'生产标签'}],
flag:true,
screenWidth:window.innerWidth
},
methods:{
showTag(){
this.flag = !this.flag
}
},
mounted(){
let that = this;
window.onresize=()=>{
return (()=>{
window.screenWidth = window.innerWidth;
this.screenWidth = window.screenWidth;
})()
}
},
watch:{
screenHeight(val){
this.screenWidth = val
}
}
})
</script>
</html>