使用了组件后做的todolist再怎么实现删除每项功能呢？
这个是通过拆分组件写的todolist，我想点击删除按钮但是没有到达删除的效果，是为啥呢？
4 回答
<body>
<div id="root">
<div>
<input v-model="inputValue"/>
<button @click="handleClick">提交</button>
</div>
<ul>
<todo-item
v-for="(item, index) of list"
:key="index"
:content=item
:mark="index"
@delete-list="deleteList($event)">
</todo-item>
</ul>
</div>
<script>
// 全局组件
Vue.component("todo-item",{
props: ["content", "mark"], //接受外部传入的content属性的值
template: "<li @click='handleDelete()'>{{content}}-X</li>",
data: function(){
return {
myindex: this.mark
}
},
methods: {
handleDelete: function(){
// 自定事件，通知父组件
// console.log(this.mylist)
// console.log(this.myindex)
this.$emit("delete-list", this.myindex)
}
}
}),
// 局部组件
// var TodoItem = {
// template: "<li>item</li>"
// }
new Vue({
el: "#root",
// 注册局部组件
// components: {
// "todo-item": TodoItem
// },
data: {
list: [],
inputValue: ''
},
methods: {
handleClick: function(){
this.list.push(this.inputValue)
this.inputValue=''
},
deleteList: function(para){
console.log("父组件的删除")
console.log(para)
// alert(para)
this.list.splice(para, 1)
}
}
})
</script>
</body>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
</head>
<body>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<div id="app">
<input type="text" v-model="value" />
<button @click="pull">增加</button>
<button @click="move">删除</button>
<ol>
<!--<li v-for="(item,index) of list" :key='index'>{{item}}</li>-->
<!--index 角标-->
<kkk v-for="(item,index) of list" :key='index' :content='item'></kkk>
</ol>
</div>
<script>
//全局组件
Vue.component('kkk',{
props:['content'],
template:'<li>{{content}}</li>'
})
//局部组件
// var itn=Vue.component('kkk',{
// props:['content']
// template:'<li>{{content}}</li>'
// })
new Vue({
el:'#app',
data:{
value:'',
list:[],
},
methods:{
pull:function(){
this.list.push(this.value);
this.value='';
},
move:function(){
this.list.shift();
}
}
})
</script>
</body>
</html>
// 把handleClick方法定义在子组件内
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
</head>
<body>
<div id="root">
<div>
<input v-model="inputValue"/>
<button @click="handleClick">提交</button>
</div>
<ul>
<todo-item v-for="(item, index) of list" :key="index" :content="item" :origin_list="list"></todo-item>
</ul>
</div>
<script>
Vue.component('todo-item', {
props: ['content', 'origin_list'],
template: "<li >{{content}}<p @click='handleClick'>X</p></li>",
methods: {
handleClick: function () {
this.origin_list.pop(this.item);
}
}
});
new Vue({
el: '#root',
data: {
list: [],
inputValue: '',
},
methods: {
handleClick: function () {
if (this.inputValue) {
this.list.push(this.inputValue);
this.inputValue = '';
}
}
}
})
</script>
</body>
</html>举报
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