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js vue v-for循环删除数组项（删不干净的问题）

重点在与

a -= 1

,要让

a

随着被截取后数组长度的变化而变化，截取一个，

a

少一次。

let val = this.childData.chackNumber
      for (let a = 0; a < val.length; a++) { 
        if (val[a].chack == false) {
          val.splice(a,1)
          a -= 1   //每删除一个项就让a减少一个 保持a和长度同步
        }
      }

数据结构如下：

chackNumber: [
          { 
            floorID:true,
            chack: true,
            name: "[01]"
          },
          {
            floorID:false,
            chack: false,
            name: "[02]"
          },
          { 
            floorID:false,
            chack: false,
            name: "[03]"
          },
          { 
            floorID:false,
            chack: false,
            name: "[04]"
          },
          { 
            floorID:true,
            chack: true,
            name: "[05]"
          },
          { 
            floorID:false,
            chack: false,
            name: "[06]"
          },
          { 
            floorID:true,
            chack: true,
            name: "[07]"
          },
          { 
            floorID:false,
            chack: false,
            name: "[08]"
          },
          { 
            floorID:true,
            chack: true,
            name: "[09]"
          },
          { 
            floorID:true,
            chack: true,
            name: "[10]"
          },
          { 
            floorID:false,
            chack: false,
            name: "[11]"
          }
        ]