1.今天关于这个vue的双向绑定以及自定义事件分发和插槽等知识做了一个程序的总结
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>vue核心语法</title>
</head>
<body>
<div id="app">
<todo>
<todo-title slot="todo-title" :title="title"></todo-title>
<todo-items slot="todo-items" v-for="(item,index) in todoItems" :item="item" v-bind:index="index" v-on:remove="removeItems(index)" :key="index"></todo-items>
</todo>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.21/dist/vue.min.js"></script>
<script>
Vue.component("todo",{
template:'<div>\
<slot name="todo-title"></slot>\
<ul>\
<slot name="todo-items"></slot>\
</ul>\
</div>'
});
Vue.component("todo-title",{
props:['title'],
template: '<div>{{title}}</div>'
});
Vue.component("todo-items",{
props:['item','index'],
template:'<li>{{item}} <button @click="remove">删除</button></li>',
methods:{
remove:function (index) {
this.$emit('remove',index)
}
}
});
var vm=new Vue({
el:"#app",
data:{
title:"huangshuai",
todoItems:['huang','shuai','huangshuai']
},
methods:{
removeItems:function (index) {
console.log("删除了"+this.todoItems[index]+"OK");
this.todoItems.splice(index,1);//一次删除一个元素
}
}
});
</script>
</body>
</html>
image.png
点击删除之后
image.png
