数组按照每个对象的属性值的大小进行排序

数组按照每个对象的属性值的大小进行排序

let arr = this.data 
arr.sort(this.compare('avgScore'))

compare (property) {
    return function (a, b) {
        var value1 = a[property]
        var value2 = b[property]
        return value2 - value1
    }
},

分割数组为[[],[],[]]

// 分割数组
    splitData (num, arr) {
      if (this[arr].length < num) {
        return [this[arr]]
      } else {
        const times = Math.ceil(this[arr].length / num)
        const newArr = []
        for (let i = 0; i <= times; i++) {
          if (i * num >= this[arr].length) {
            break
          }
          newArr.push(this[arr].slice(i * num, (i + 1) * num))
        }
        return newArr
      }
    },