记录mapv.js使用，销毁后再重新绘制报错解决方法
姚嘉容
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
html,body, #app,#map{
width:100%;
height: 100vh;
margin:0;
padding:0;
}
.btn-wrapper{
position: fixed;
top:20px;
left:20px;
background: #fff;
z-index: 1;
}
</style>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=3.0&ak="></script>
<script src="http://mapv.baidu.com/build/mapv.js"></script>
</head>
<body>
<div id="app">
<div class="btn-wrapper"><button @click="removeMpvLayer()">销毁</button>
<button @click="dealGridData()">添加</button>
<button @click="add()">绑定事件</button>
</div>
<div id="map">
</div>
</div>
</body>
<script>
var app = new Vue({
el: '#app',
data: {
message: 'Hello Vue!',
mapvLayer:'',
map:null,
jsondata:[{"geometry":{"type":"Polygon","coordinates":[[[115.10159743089054,34.79988739572384],[115.10107784297621,34.79770787188133],[115.10616433265868,34.79763593910694],[115.10633842414927,34.79978413116733],[115.10159743089054,34.79988739572384]]]},"name":"东南架坡","text":"东南架坡"},
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},
mounted(){
window.threeClick = this.threeClick
this.map = new BMap.Map("map", {
enableMapClick: false
}); // 创建Map实例
this.map.centerAndZoom(new BMap.Point(115.10159743089054, 34.79988739572384), 19); // 初始化地图,设置中心点坐标和地图级别
this.map.enableScrollWheelZoom(true);
setTimeout(()=>{
this.dealGridData()
},500)
},
methods:{
dealGridData(){
var dataSet = new mapv.DataSet(this.jsondata);
var options = {
fillStyle: 'rgba(255, 0, 0,0.1)',
strokeStyle: 'rgba(255, 0, 0,0.8)',
size: 2,
lineWidth: 1.5,
draw: 'simple',
zIndex:1,
label: { // 是否显示文字标签
show: true,
},
showText: true,
methods: { // 一些事件回调函数
click: function (item,e) { // 点击事件，返回对应点击元素的对象值
if(item)threeClick(e,item)
},
},
}
this.mapvLayer = new mapv.baiduMapLayer(this.map, dataSet, options);
console.log(this.mapvLayer)
},
threeClick(val,id){
console.log(val)
console.log(id)
},
add(){
this.mapvLayer.bindEvent()
},
removeMpvLayer(){
console.log('触发销毁')
this.mapvLayer.hide()
this.mapvLayer.unbindEvent()
// this.mapvLayer.destroy()
// this.mapvLayer = {}
console.log(this.mapvLayer)
}
}
})
</script>
</html>
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