组装数据- 对象里面是key:value, value里面是数组的形式，如 {key:[aa,bb], key:[cc,dd]}

组合后 对象里面是key:value,value里面是数组的形式{key:[aa,bb], key:[cc,dd]}

var chinaGeoCoordMap = {

'无锡市': [121.4648, 31.2891],

'廊坊市': [119.5313, 29.8773],

"金华市": [118.8062, 31.9208],

 

第2个参数以数组的形式传递的

this.add(this.centerdata[i].city,[this.centerdata[i].x,this.centerdata[i].y])

 data: {

              centerdata:[

                 {"city": "无锡市","clusterID": 1, "x": 120.7485913653,"y": 31.809979797058332},

                 {"city": "廊坊市","clusterID": 2,"x": 130.7485913653,"y": 39.215436433250005},

                 {"city": "金华市","clusterID": 3,"x": 140.7485913653,"y": 29.190387826775}

              ]

            },

  created() {

            for(var i=0;i<this.centerdata.length;i++){

              this.add(this.centerdata[i].city,[this.centerdata[i].x,this.centerdata[i].y])；//传参是重点

            }

          },

          methods: {

              add(key,value){

                let keyValue={}

                keyValue[key]=value;

                console.log(keyValue)

               }

          },