VUE随机洗牌，JS随机排序数组/洗牌函数
第一步：新建一个名为tools.js的文件
//随机排序数组/洗牌函数
function?copyArray(source,?array)?{
??let?index?=?-1;
??const?length?=?source.length;
??array?||?(array?=?new?Array(length));
??while?(++index?<?length)?{
????array[index]?=?source[index];
??}
??return?array;
}
export?const?randomSortArray?=?function?shuffle(array)?{
??const?length?=?array?==?null???0?:?array.length;
??if?(!length)?{
????return?[];
??}
??let?index?=?-1;
??const?lastIndex?=?length?-?1;
??const?result?=?copyArray(array);
??while?(++index?<?length)?{
????const?rand?=?index?+?Math.floor(Math.random()?*?(lastIndex?-?index?+?1));
????const?value?=?result[rand];
????result[rand]?=?result[index];
????result[index]?=?value;
??}
??return?result;
}
第二步：在页面中引入随机洗牌函数，并使用
// 在页面中引入随机洗牌函数?
import?{?randomSortArray?}?from?"@/utils/tools.js";
// 在方法中使用
let?arr?=?[];
for?(let?i?=?0;?i?<?52;?i++)?{
? arr.push(i?+?1);
}
console.log(arr);
let?newArr?=?randomSortArray(arr);
console.log(newArr);
// 打印结果1：[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52]
// 打印结果2：[41, 35, 47, 44, 38, 21, 10, 51, 49, 13, 20, 11, 43, 40, 52, 24, 9, 8, 29, 25, 27, 19, 36, 31, 39, 45, 23, 42, 14, 17, 18, 30, 4, 48, 16, 33, 34, 32, 1, 5, 28, 37, 3, 50, 15, 26, 46, 6, 12, 2, 7, 22]