定义一个1-52数字的数组
let arr = []
for (let i = 0; i < 52; i++) {
arr[i] = i + 1
}
对该数组的随机排序
arr.sort(function () {
return Math.random() - 0.5
})
对随机排序的数组按固定长度分割并生成新数组
cutArray (array, subLength) {
let index = 0
let newArr = []
while (index < array.length) {
newArr.push(array.slice(index, index += subLength))
}
return newArr
}
return this.cutArray(arr, 13)