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79 lines
2.3 KiB
JavaScript
79 lines
2.3 KiB
JavaScript
/*
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* @moduleName:通用工具类
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* @Author: dawdler
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* @Date: 2019-01-09 15:30:18
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* @LastModifiedBy: dawdler
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* @LastEditTime: 2020-12-26 14:06:09
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*/
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export default {
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getTreeData,
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each
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}
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/*
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each(arr, (item, children) => {
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item.value = xx;
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// 该item 包含children，因此直接赋值,不需要单独处理children里面的值
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});
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* [_each description] 倒查、展平、数据回调返回回当前一条数据和子集
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* @param {[Array]} data [description]
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* @param {Function} callback [description]
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* @param {String} childName[description]
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* @return {[Array]} [description]
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* 默认使用副本,在callback处理数据，如果不使用副本，那么需要重新对treeData赋值
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treeData = each(treeData, (item, children) => {
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item.value = xx;
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});
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*/
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export function each(data, callback, childName = 'children') {
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let current
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let children
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for (let i = 0, len = data.length; i < len; i++) {
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current = data[i]
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children = []
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if (current[childName] && current[childName].length > 0) {
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children = current[childName]
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}
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callback && callback(current, children)
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if (children.length > 0) {
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each(children, callback, childName)
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}
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}
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}
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/**
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* @Author yihuang",
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* @param data 数据
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* @param id 要比对的名称
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* @param val 要比对的值
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* @param name 要返回的名称
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* @param children 子集名称
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* @param isRow 是否返回这一行的数据
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* @注 迭代判断多层
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* //=======================
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* 返回这一条数据的中文名
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* let name=utils.getTreeData(arr, 'flowId', item.decategoryId, 'name');
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* //=======================
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* 返回所有匹配的数据
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* let arr=utils.getTreeData(arr, 'flowId', item.decategoryId, 'name','children',true);
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*/
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export function getTreeData(data, id = 'id', val = '', name = 'name', children = 'children', isRow = false) {
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const arr = []
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each(
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data,
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item => {
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if (item[id] === val) {
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arr.push(item)
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}
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},
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children
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)
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return arr.length > 0 ? (isRow ? arr : arr[0][name]) : null
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}
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export function guid() {
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return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
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const r = (Math.random() * 16) | 0
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const v = c === 'x' ? r : (r & 0x3) | 0x8
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return v.toString(16)
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})
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}
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