js static 一問

js oop

diu7me 2021-12-01 10:02:53 ‧ 703 瀏覽

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大家好,

請問一下如果要assign 一個static variable 給另外一個static variable 要怎麼辦

class chartAction {

    static def_station =
        [
            '[30 HK Grids] ',
            '[WGL] ',
            '[WGL] ',
            '[SE] ',
            '[SE] ',
            '[SE] ',
            '[SE] ',
            '[30 HK Grids] ',
            '[30 HK Grids] ',
            '[30 HK Grids] ',
            '[30 HK Grids] ',
            '[30 HK Grids] ',
            '[Sum of 30 HK Grids] ',
            '[30 HK Grids] ',
            '',
            ''
        ];

    static station = def_station;  <= !!!!!!! 就是這裡
    static abc;    
    constructor() {
        this.abc = this.station <= !!!!!!! 怎樣ASSIGN STATION
    }
}

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2 個回答

居然解出來了

iT邦好手 1 級 ‧ 2021-12-01 10:20:27

前面加 this. 即可

class ChartAction {
    static def_station = [
            '[30 HK Grids] ',
            '[WGL] ',
            '[WGL] ',
            '[SE] ',
            '[SE] ',
            '[SE] ',
            '[SE] ',
            '[30 HK Grids] ',
            '[30 HK Grids] ',
            '[30 HK Grids] ',
            '[30 HK Grids] ',
            '[30 HK Grids] ',
            '[Sum of 30 HK Grids] ',
            '[30 HK Grids] ',
            '',
            ''
        ];

    static station = this.def_station;
}

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diu7me iT邦新手 3 級 ‧ 2021-12-01 10:26:01 檢舉

已經改了,麻煩請看看

居然解出來了 iT邦好手 1 級 ‧ 2021-12-01 10:37:58 檢舉

其實剛剛是我看錯xd
我剛剛打成java語法
現在已修正

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fillano

iT邦超人 1 級 ‧ 2021-12-01 10:36:03

class chartAction {
  static def_station =
      [
          '[30 HK Grids] ',
          '[WGL] ',
          '[WGL] ',
          '[SE] ',
          '[SE] ',
          '[SE] ',
          '[SE] ',
          '[30 HK Grids] ',
          '[30 HK Grids] ',
          '[30 HK Grids] ',
          '[30 HK Grids] ',
          '[30 HK Grids] ',
          '[Sum of 30 HK Grids] ',
          '[30 HK Grids] ',
          '',
          ''
      ];
  static station = this.def_station;
  static abc;    
  constructor() {
    chartAction.abc = chartAction.station;
  }
} 
console.log(chartAction.abc);//undefined
let a = new chartAction();
console.log(chartAction.abc);