JavaScript我可以在Console.log中看到我的数组,但是无法访问其中的元素

时间:2019-12-01 23:50:39

标签: javascript arrays parsing undefined console.log

当我console.log我的数组时,我可以看到它,但是当我尝试获取其中一个元素时,它返回的是不确定的。我读过几个类似的线程,它们说此问题可能是由于数组异步填充而导致的,所以尚未对结果建立索引,但是我正在使用asyn / await。我提供了console.logs的代码和屏幕截图。

_parseLocation = async (file : File) => {
    const {campaign} = this.props;
    const {locations} = this.state;
    let addresses: Array<{name: string, address: string}> = [];
    var i = 0;
    var csvFilePath = file;
    var Papa = require("papaparse/papaparse.min.js");
    await Papa.parse(csvFilePath, {
            header: true,
            download: true,
            skipEmptyLines: true,
            step: function (row: { data: any; }) {
                if (row.data.Zip) {
                    let firstName: string = row.data.FirstName
                    let lastName: string = row.data.LastName
                    let name: string = firstName + " " + lastName
                    let houseNumber: string = row.data.HouseNumber
                    let houseNumberSuffix: string = row.data.HouseNumberSuffix
                    let streetName: string = row.data.StreetName
                    let zip: string = row.data.Zip;
                    let address = houseNumber + " " + houseNumberSuffix + " " + streetName + " " + zip;
                    addresses.push({name, address})
                }
            }
        });
    return addresses;
  }



 _test = async (file: File) =>{
    const { campaign } = this.props;
    const { locations } = this.state
    let addresses = await this._parseLocation(file)
    console.log("addresses", addresses)
    console.log("address", addresses[0])
}

enter image description here

0 个答案:

没有答案