<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<script src="vue.js"></script>
<title id="title">{{title}}</title>
</head>
<body>
<div id="ask"><!--vue不能控制body和html的标签-->
<ul>
<li v-for="v in list">
{{v.content}}
</li>
</ul>
<textarea v-model="content" cols="30" rows="10"></textarea>
<button v-on:click="push('pre')">发表到前面</button>
<button v-on:click="push('end')">发表到后面</button>
<button v-on:click="del('first')">删除第一条</button>
<button v-on:click="del('last')">删除最后一条</button>
</div>
<script>
var vue = function (options){new Vue(options)};
vue({
el:'#title',
data:{
title:'Vue 变异方法unshift&pop&shift'
}
});
var app = vue({
el:'#ask',
data:{
content:'',
list:[
{'content':'hello'},
{'content':'简单记录'}
]
},
methods:{
push(type){
var content_push = {'content':this.content};
switch (type) {
case 'pre':
this.list.unshift(content_push);
break;
case "end":
this.list.push(content_push);
break;
}
this.content='';
},
del(type){
switch (type) {
case 'first':
this.list.shift();
break;
case "last":
this.list.pop();
break;
}
}
}
});
</script>
</body>
</html>