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09v-model.html
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09v-model.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="vue.js"></script>
</head>
<body>
<div id="demo">
<ul>
<li :class="[isClass?'class-a':'class-b']" v-if="index" v-for="(item,index) in list" v-userdefined >
<!--<img v-bind:src="item.url"/>-->
<input type="text" v-model="item.url">
<input type="checkbox" :value="index" v-model="checkbox">
</li>
</ul>
<select v-model="select">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select>
<base-input v-model="lovingVue"></base-input>
<!-- 我是注释节点，你好啊！ -->
</div>
<style>
.class-a {
background: red;
}
.class-b {
background: red;
}
</style>
<script>
// 注册一个全局自定义指令 `v-focus`
Vue.directive('userdefined', { //用户自定义指令
// 当被绑定的元素插入到 DOM 中时……
inserted: function (el) {
// 聚焦元素
el.addEventListener("click", function(){
alert(1)
});
}
})
//关键是在$emit('change', $event.target.checked) change或者input 事件就是更新model事件
Vue.component('base-input', {
model: {
prop: 'text',
event: 'input' //或者 event: 'change' 都可以
},
props: {
text: String
},
template: `
<input
type="text"
v-bind:value="text"
v-on:input="$emit('input', $event.target.value)"
>
`
})
//创建一个vue的实例
new Vue({
el: "#demo",
comments:true,
data: {
isClass:true,
lovingVue:'123',
checkbox:['3'],
// checkbox:false,
select:3,
userDefined:'userDefined',
classA: true,
list: [
{
selected:false,
url: 'http://i4.265g.com/images/201902/201902280644122663.jpg'
},
{
selected:true,
url: 'http://i4.265g.com/images/201902/201902280644122663.jpg'
},
{
selected:false,
url: 'http://i4.265g.com/images/201902/201902280644122663.jpg'
},
{
selected:false,
url: 'http://i4.265g.com/images/201902/201902280644122663.jpg'
},
{
selected:false,
url: 'http://i4.265g.com/images/201902/201902280644122663.jpg'
},
],
},
methods: {
clickEvent(){
console.log('clickEvent')
},
clickEvent1(){
console.log('clickEvent1')
}
},
beforeCreate(){
},
created(){
},
beforeMount(){
},
mounted: function(){ //挂载元素，获取到DOM节点
console.log(this.lovingVue)
console.log(this.select)
setInterval(()=>{
console.log(this.lovingVue)
},1000)
},
beforeUpdate(){
},
updated(){ //挂载元素，获取到DOM节点
},
beforeDestroy(){
},
destroyed(){
},
})
</script>
</body>
</html>