vnode模拟v-model
2018-07-07 本文已影响0人
嗯哼_3395
一个改变显示的随之改变
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<script src="vue.min.js"></script>
</head>
<body>
<div id="box">
<input type="text" v-len="name">
<p>{{name}}</p>
</div>
</body>
<script>
Vue.directive("len",{
inserted:function(el,binding,vnode){
el.value=binding.value;
//当input框的值发生改变的时候
el.addEventListener("input",function(){
vnode.context[binding.expression]=el.value;
})
},
//当data发生改变的时候
update:function(el,binding,vnode){
el.value=binding.value;
}
})
var box=new Vue({
el:"#box",
data:{
name:"veb"
}
})
</script>
</html>
