微信小程序（游戏）----拖拽拼图（图片分块和打乱顺序）

initTypeArr(){
    let arr = [],count = 0;
    for(let i = 0; i < this.type; i++){
      arr[i] = [];
      for(let j = 0; j < this.type; j++){
        arr[i].push({
          x: j,
          y: i,
          px: j,
          py: i,
          count: count
        });
        this.pointsArr.push(count);
        count++;
      }
    }
    this.typeArr = arr;
  }

randomArr(){
    let len = this.pointsArr.length - 1;
    for(let i = 0; i < len; i++){
      let index = parseInt(Math.random() * len);
      let current = this.pointsArr[i];
      this.pointsArr[i] = this.pointsArr[index];
      this.pointsArr[index] = current;
    }
    for (let j = 0, le = this.typeArr.length; j < le; j++){
      let arr = this.typeArr[j];
      this.newTypeArr[j] = [];
      for (let k = 0,l = arr.length; k < l; k++){
        let val = arr[k];
        this.newTypeArr[j].push({
          x: val.x,
          y: val.y,
          px: this.pointsArr[val.count] % this.type,
          py: parseInt(this.pointsArr[val.count] / this.type),
          count: val.count
        })
      }
    }
  }