函数 forEachNum

  • forEachNum(len, callback): void

  • 代替for循环

    参数

    • len: number
    • callback: ((index: number) => any)
        • (index): any

        • 参数

          • index: number

          返回 any

    返回 void

    示例

    const arr: number[] = [];
    forEachNum(3, (index) => arr.push(index));
    arr; // [0, 1, 2]
    forEachNum(7, (index) => arr.push(index));
    arr.length; // 10
    forEachNum(3, (index): void | false => {
      arr.push(index);
      if (index === 1) return false;
    });
    arr; // [0, 1, 2, 0, 1, 2, 3, 4, 5, 6, 0, 1]