<!doctype html><html>
<head>
<meta charset="utf-8">
<title>vue</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="animate.css">
<script src="vue.js"></script>
<style>
*{
color:#585858;
}
#app{
min-height: 650px;
}
#app li{
list-style-type:none;
}
#app a{
text-decoration:none;
}
#app button{
width:100%;
}
#app ul{
padding:10px;
}
#app span{
cursor:pointer;
}
#tree{
border: 1px solid #ccc;
min-height: 650px;
width: 50%;
margin:0;
padding-top: 10px;
background-color:#f2f2f2;
position: absolute;
top:0;
left:0;
}
#tree li {
display: block;
padding: 0;
margin: 0;
border: 0;
border-bottom: 1px solid #e5e5e5;
min-height: 32px;
line-height:32px;
}
</style>
</head>
<body>
<p id='app' @click='hidetree($event)'>
<button @click.stop="show = !show">点我</button>
<transition enter-active-class="animated fadeinleft" leave-active-class="animated fadeoutleft">
<item v-bind:tree='treedata' id='tree' v-if="show"></item>
</transition>
</p>
<template id='tree-template'>
<ul>
<li v-for='(v,i) in tree'>
<span v-if="isfolder(v)" @click="toggle(i)">{{ tree[i].open ? '-' : '+' }}</span>
<a data-id="v.id">{{v.city}}</a>
<item v-bind:tree='v.child' v-show="tree[i].open"></item>
</li>
</ul>
</template>
<script>
var data = [{id:26,pid:1,city:四川省},{id:30,pid:1,city:云南省},{id:322,pid:26,city:成都},{id:323,pid:26,city:绵阳},{id:324,pid:26,city:阿坝},{id:325,pid:26,city:巴中},{id:326,pid:26,city:达州},{id:327,pid:26,city:德阳},{id:328,pid:26,city:甘孜},{id:329,pid:26,city:广安},{id:330,pid:26,city:广元},{id:331,pid:26,city:乐山},{id:332,pid:26,city:凉山},{id:333,pid:26,city:眉山},{id:334,pid:26,city:南充},{id:335,pid:26,city:内江},{id:336,pid:26,city:攀枝花},{id:337,pid:26,city:遂宁},{id:338,pid:26,city:雅安},{id:339,pid:26,city:宜宾},{id:340,pid:26,city:资阳},{id:341,pid:26,city:自贡},{id:342,pid:26,city:泸州},{id:367,pid:30,city:昆明},{id:378,pid:30,city:曲靖},{id:3100,pid:367,city:盘龙区},{id:3101,pid:367,city:五华区},{id:3102,pid:367,city:官渡区},{id:3103,pid:367,city:西山区},{id:3104,pid:367,city:东川区},{id:3105,pid:367,city:安宁市},{id:3106,pid:367,city:呈贡县},{id:3107,pid:367,city:晋宁县},{id:3108,pid:367,city:富民县},{id:3109,pid:367,city:宜良县},{id:3110,pid:367,city:嵩明县},{id:3111,pid:367,city:石林县},{id:3112,pid:367,city:禄劝},{id:3113,pid:367,city:寻甸},{id:3189,pid:378,city:麒麟区},{id:3190,pid:378,city:宣威市},{id:3191,pid:378,city:马龙县},{id:3192,pid:378,city:陆良县},{id:3193,pid:378,city:师宗县},{id:3194,pid:378,city:罗平县},{id:3195,pid:378,city:富源县},{id:3196,pid:378,city:会泽县},{id:3197,pid:378,city:沾益县}]; var treedata = createtree({
idname:'id',
pidname:'pid',
rootid:1,
data:data
}); function createtree(arg){ var idname = arg.idname,
pidname = arg.pidname,
rootid = arg.rootid,
data = arg.data,
treedata = []; var _createtree = function(id){ var ret = [];
var index = 0; for(var i = 0; i < data.length; i++){
if(data[i][pidname] == id){
ret[index] = data[i];
ret[index].child = _createtree(data[i][idname]);
index++;
}
} return ret;
} var index = 0; for(var i = 0; i < data.length; i++){
if(data[i][pidname] == rootid){
treedata[index] = data[i];
treedata[index].child = _createtree(data[i][idname]);
index++;
}
} return treedata;
}
vue.component('item', {
template: '#tree-template',
props: ['tree'],
data: function () { return {}
},
methods: {
toggle: function (i) { this.tree[i].open = !this.tree[i].open; this.$set(this.tree, i, this.tree[i]);
},
isfolder: function (data) { return data.child && data.child.length
},
},
}) var vm = new vue({
el: '#app',
data: {
treedata: treedata,
show:false,
},
methods: {
hidetree:function(e){ if(e.target.id == 'app'){
console.log(137); this.show = false;
}
}
},
created: function () { function _addopen(data) { for (var i = 0; i < data.length; i++) {
data[i]['open'] = false; if (data[i].child.length > 0) {
_addopen(data[i].child);
}
}
}
_addopen(this.treedata);
}
}); </script>
</body></html>
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以上就是vue怎样实现树形菜单的详细内容。
