JS 数组中根据某个字段进行排序
const arr = [
{ name: "崔喻琪", age: 32 },
{ name: " 王忱景", age: 18 },
{ name: " 房真睿", age: 27 },
{ name: "姬泉孝", age: 20 },
{ name: "余嘉芳", age: 16 },
{ name: "孙平卉", age: 23 },
];
console.log(this.abilitySort(arr, "age", true));
/** 根据传入的字段进行排序* @param arr 需要排序的数组* @param property 排序的字段* @param desc true.升序 false.降序* @returns {*} 排好序后的数组*/
abilitySort(arr, property, desc) {return arr.sort(function (a, b) {const val1 = a[property];const val2 = b[property];if (desc) {return val1 - val2; // 升序排列} else {return val2 - val1; // 降序排列}});
},JS 数组中根据某个字段进行分组
const arr = [
{ id: "1001", name: "崔喻琪", age: 32 },
{ id: "1001", name: " 王忱景", age: 18 },
{ id: "1001", name: " 房真睿", age: 27 },
{ id: "1002", name: "姬泉孝", age: 20 },
{ id: "1002", name: "余嘉芳", age: 16 },
{ id: "1003", name: "孙平卉", age: 23 },
];
console.log(this.abilitySort(arr, "id"));
/** 根据传入的字段进行分组* @param arr 需要分组的数组* @param property 分组的字段* @returns {*[]} 已分好组的数组*/
abilitySort(arr, property) {let map = {};for (let i = 0; i < arr.length; i++) {const ai = arr[i];if (!map[ai[property]]) map[ai[property]] = [ai];else map[ai[property]].push(ai);}let res = [];Object.keys(map).forEach((key) => {res.push({ [property]: key, data: map[key] });});return res;
},JS 将数组分为 n 个一组
const list = [
{ id: 1, name: '宰父谷枫' },
{ id: 2, name: '买孟' },
{ id: 3, name: '疏学林' },
{ id: 4, name: '次如风' },
{ id: 5, name: '巧紫雪' }
];
console.log(this.datumGroup(list, 3));
/** 将数组分为 n 个一组* @param data 需要操作的数组数据* @param n 多少个为一组(默认4个为一组)* @returns {*[]} 已分好组的数组*/
datumGroup(data, n = 4) {let newArr = [];for (let i = 0, j = data.length; i < j; i += n) {newArr.push(data.slice(i, i + n));}return newArr;
},
