判断列表是否展示的简写？

Question

visible 是默认列表页隐藏的，我想让他们等于1的时候展示，但是代码量太多了，希望变成简写

        if (this.batchRule.extendOne === 1) {
            this.columns[20].visible = true
        }
        if (this.batchRule.extendTwo === 1) {
          this.columns[21].visible = true
        }
        if (this.batchRule.extendThree === 1) {
          this.columns[22].visible = true
        }
        if (this.batchRule.extendFour === 1) {
          this.columns[20].visible = true
        }
        if (this.batchRule.extendFive === 1) {
          this.columns[21].visible = true
        }
        if (this.batchRule.extendSix === 1) {
          this.columns[22].visible = true
        }

Answer 1

把这些抽成一个字段 = this.columns的下标
例如：this.batchRule.extendIndex = 15;
this.columns[this.batchRule.extendIndex].visible = true