alertIcon(n) {
    let that = this;
    setInterval(() => {
      for (let i in that.data.circles) {
        if (that.data.circles[i].radius < 500) {
          that.data.circles[i].radius += 50;
        } else {
          that.data.circles[i].radius = 0;
        };
      };
      that.setData({
        markers: that.data.mapData,
        circles: that.data.circles
      })
    }, n);
  },

//Console:
/*
 *[渲染层错误] MultiPolyline.styles: 样式id 
 *[渲染层错误] MultiCircle.geometries: 希望传入CircleGeometry数组，实际第0元素的radius属性无效！
 *[渲染层错误] MultiCircle.geometries: 希望传入CircleGeometry数组，实际第1元素的radius属性无效！
 *[渲染层错误] MultiCircle.geometries: 希望传入CircleGeometry数组，实际第2元素的radius属性无效！
 *[渲染层错误] MultiPolyline.geometries: 希望传入PolylineGeometry数组，实际第0元素的paths属性无效！
 *[渲染层错误] MultiPolyline.geometries: 希望传入PolylineGeometry数组，实际第1元素的paths属性无效！
 *[渲染层错误] MultiPolyline.geometries: 希望传入PolylineGeometry数组，实际第2元素的paths属性无效！
 *[/__pageframe__/pages/mapalert/mapalert] width and heigth of marker id 0 are required
 *[/__pageframe__/pages/mapalert/mapalert] width and heigth of marker id 1 are required
 *[/__pageframe__/pages/mapalert/mapalert] width and heigth of marker id 2 are required
*/
//打算在每一个markers下增加一个涟漪效果，作为警告标志。但是出现上诉错误和警告，请教大神如何解决？