Question

JSON.stringify(this.p)
console.log(this.p + " " + typeof(this.p))

这些陈述给了我

[{lat:52.52193980072258,lng:13.401432037353516},{lat:52.52319316685915,lng:13.407096862792969},{lat:52.51969409696076,lng:13.407225608825684}] string

所以this.p是一个字符串。如果我使用它在我的谷歌地图中绘制一个多边形，它不会给出数组异常（但很自然！）。

如何将其转换为数组（类型可能是google.maps.LatLngLiteral或任何合适的数组）？

注意：如果我执行JSON.stringify(this.p)：

JSON.parse(this.p)
console.log(this.p + " " + typeof( this.p))

这说：SyntaxError: Unexpected token l in JSON at position 2

出了什么问题以及如何解决？

我在我的多边形中使用它：

 var polygon = new google.maps.Polygon({
          paths: this.p,
          strokeColor: '#FF0000',
          strokeOpacity: 0.8,
          strokeWeight: 3,
          fillColor: '#FF0000',
          fillOpacity: 0.35,
          map: this.map
        });

Answer 1

完整的方法如下所示：

var myVar=[]

    this.exhibitionSurveyObjectService.getObjects()
    .subscribe(

      response => {       

        this.exhibitionSurveyObjects = response;
        console.log(this.exhibitionSurveyObjects)

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

          myVar.push(JSON.parse(this.exhibitionSurveyObjects[i].path)) 

        }

        var polygon = new google.maps.Polygon({
          paths: myVar,
          strokeColor: '#FF0000',
          strokeOpacity: 0.8,
          strokeWeight: 3,
          fillColor: '#FF0000',
          fillOpacity: 0.35,
          map: this.map
        });
      },

      error =>  {
        console.log("error")
        this.errorMessage = <any>error; 

      }

      )

angular2 / typescript将字符串转换为数组

1 个答案: