102 lines
2.7 KiB
JavaScript
102 lines
2.7 KiB
JavaScript
/**
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* @Author: weilan
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* @Date: 2019-12-02
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*/
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"use strict";
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import Vue from "vue";
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import dayjs from 'dayjs' // 导入日期js
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/**
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* 将树形数据向下递归为一维数组
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* @param {*} arr 数据源
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* @param {*} childs 子集key
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*/
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function flattenDeep(arr = [], childs = "Children") {
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return arr.reduce((flat, item) => {
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return flat.concat(
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item,
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item[childs] ? flattenDeep(item[childs], childs) : []
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);
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}, []);
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}
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/**
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* 深拷贝
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* @param {*} source 要拷贝的数据
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*/
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function deepClone(source) {
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if (!source && typeof source !== "object") {
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throw new Error("error arguments", "shallowClone");
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}
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const targetObj = source.constructor === Array ? [] : {};
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Object.keys(source).forEach(keys => {
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if (source[keys] && typeof source[keys] === "object") {
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targetObj[keys] = source[keys].constructor === Array ? [] : {};
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targetObj[keys] = deepClone(source[keys]);
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} else {
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targetObj[keys] = source[keys];
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}
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});
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return targetObj;
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}
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/**
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* 筛选出数组中最大值
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* @param {*} arr 数据
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* @param {*} key 如果是复杂型数组，请指定字段key
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* @param {*} stamp 如果是时间格式，请设置以转化时间戳
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*/
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function getMax(arr = [], key = null, stamp = false) {
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let _o = !key ? arr : arr.map(i => i[key]);
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let _t = !stamp ? _o : _o.map(i => dayjs(i).valueOf());
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return Math.max(..._t);
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}
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/**
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* 筛选出数组中最小值
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* @param {*} arr 数据
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* @param {*} key 如果是复杂型数组，请指定字段key
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* @param {*} stamp 如果是时间格式，请设置以转化时间戳
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*/
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function getMin(arr = [], key = null, stamp = false) {
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let _o = !key ? arr : arr.map(i => i[key]);
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let _t = !stamp ? _o : _o.map(i => dayjs(i).valueOf());
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return Math.min(..._t);
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}
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function deepChangeObject(data) {
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let tmp = [];
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Array.from(data).forEach(function (record) {
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Vue.set(record, "_level", _level);
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Vue.set(record, "_parents", _parents);
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Vue.set(record, "_level", _level);
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if (record.startDate && record.endDate) {
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let days = dayjs(record.endDate).diff(dayjs(record.startDate), 'day');
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Vue.set(record, "_duration", days);
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}
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if (record.startDate) {
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Vue.set(record, "_old_startDate", record.startDate);
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}
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if (record.endDate) {
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Vue.set(record, "_old_endDate", record.endDate);
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}
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// 如果有父元素
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if (parent) {
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Vue.set(record, "_parent", parent);
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}
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tmp.push(record);
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if (record[children] && record[children].length > 0) {
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deepChangeObject(record[children], children, record, _level);
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}
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});
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return tmp;
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}
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export {
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flattenDeep, // 将树转化为一维数组
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deepClone, // 深拷贝
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getMax, // 获取最大值
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getMin, // 获取最小值
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}
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