 methods: {
            handleLoad(e) {
                console.log('地图加初始化完毕！', e);
            },
            initData() {
                var vm = this;
                var randomCount = 500;
                var data = [];
                while (randomCount--) {
                    data.push({
                        geometry: {
                            type: 'Point',
                            coordinates: [75 + Math.random() * 50, 20.3 + Math.random() * 20]
                       