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HarmonyOS
del删除上一行的时候，下一行如果有内容会自动展开，为什么，大家帮忙解决一下，感谢！！！
以下是全部的代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>树形视图扩展</title>
<style>
body {
font-family: Menlo, Consolas, monospace;
color: #444;
}
.item {
cursor: pointer;
}
.bold {
font-weight: bold;
}
ul {
padding-left: 1em;
line-height: 1.5em;
list-style-type: dot;
}
</style>
<script src="https://cdn.bootcss.com/vue/2.4.2/vue.min.js"></script>
</head>
<body>
<script type="text/x-template" id="item-template">
<li>
<div :class="{bold: isFolder}" @click="toggle" @dblclick="changeType">
{{ model.name }}
<span v-if="isFolder">[{{ open ? '-' : '+' }}]</span>
<span class="bold" @click="$emit('del', index)">[del]</span>
</div>
<ul v-if="isFolder" v-show="open">
<item class="item" v-for="(item, index) in model.children" :key="index" :index="index" :model="item" @del="model.children.splice($event, 1)"></item>
<li class="add" @click="addChild">+</li>
</ul>
</li>
</script>
<p>树形结构</p>
<ul id="demo">
<item class="item" v-for="(model, index) in treeData" :key="index" :index="index" :model="model" @del="treeData.splice($event, 1)"></item>
</ul>
<script>
var data = [
{name: 'han'},
{name: 'wang'},
{
name: 'liu',
children: [
{name: 'zhang'},
{name: 'lu'}
]
}
];
Vue.component('item', {
template: '#item-template',
props: {
model: Object,
index: Number
},
data: function () {
return {
open: false
}
},
computed: {
isFolder: function () {
return this.model.children && this.model.children.length;
}
},
methods: {
toggle: function () {
if (this.isFolder) {
this.open = !this.open;
}
},
changeType: function () {
if (!this.isFolder) {
Vue.set(this.model, 'children', []);
this.addChild();
this.open = true;
}
},
addChild: function () {
this.model.children.push({
name: 'new child'
});
}
}
});
var demo = new Vue({
el: '#demo',
data: {
treeData: data
}
});
</script>
</body>
</html>
html5
首先，你这里的 item key 用的是数组下标，导致了一个问题，删除第二的时候，原第三个的下标变成了2，导致了 click del 操作 引发了toggle 事件，切换了 open 状态。
两个方法解决这个问题：1. 给 @click="$emit('del', index)" 加 .stop 阻止冒泡；