42577176-优快云博客

原创 React基本实现递归Tree的方式

//最顶级的节点信息 import React from 'react' import Tree from './Tree' const treeData=[ { title: '父节点1', key: '0-0', children: [ { title: '子节点1', key: '0-0-1', children: [ { titl

2021-08-19 23:48:39 540

原创 js填补空数据

<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <title></title> </head> <body> <script> c

2021-08-18 12:42:35 336

1.使用react-router-dom react-router 完成鉴权定义路由表然后export default 数组 import Home from './home' import Child from './child' import Answer from './answer' export default [ {path:"/home",component:Home}, {path:"/child",component:Child}, {path:"/answer"

2021-08-18 09:23:10 633

原创递归转换字段

//递归转换字段 function TreeMap(perssion) { return perssion.map((v) => { return { ...v, children: v.childPermission.length ? TreeMap(v.childPermission) : [], label: ...

2021-08-13 13:50:57 161

原创 js树形常用方法

<script> var data = [ { id: 1, name: "办公管理", pid: 0, children: [ { id: 2, ...

2021-08-13 09:39:10 214

原创 Vue递归组件

展示组件  <template> <

2021-08-08 15:11:21 86

原创 Vue的全局组件注册

在这里插入代码 */ //这是利用install提供插件的方法去实现的 import Vue from 'vue' import UseCom from '../components/useCom.vue' import router from 'vue-router' const Is={ install:(Vue,options)=>{ //全局方法 Vue.prototype.$myGlobalMethod = function (value) {

2021-08-08 13:56:30 161

原创获取url参数封装

//参数数组返回值:{} var keys=['name','age'] function queryParams(keys){ var localtion=new URLSearchParams(window.location.href) return keys.reduce((preState,current)=>{ return {...preState,[current]:localtion...

2021-07-23 11:09:08 77

原创 2021-06-06

Js快速排序 var arr=[1,34,23,345,657,234,4,5,789,32,67,90];// function quickSort(arr){ var centerEnd=arr[0]; var left_arr=[]; var right_arr=[]; for (var i = 1; i < arr.length; i++) { if(arr[i]<centerEnd){ left_arr.push

2021-06-06 16:36:22 90

原创 2021-05-30

Webpack-dev_server启动提示找不到解决报错Cannot find module ‘webpack-cli/bin/config-yargs’ "name": "webpack111", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "hot": "webpack-dev-server ", "dev": "webpack-dev-server --hot",

2021-05-30 11:59:15 105

原创 moment如何转换时间戳将时间抓换成为秒的时间戳

Number(moment(v.activityTime[0]).format("X")),//X大写代表秒x代表毫秒

2021-05-23 17:28:27 4174

原创 Vue3中的复制粘贴功能

// var input = document.createElement("input"); // js创建一个input输入框 input.value = url; // 将需要复制的文本赋值到创建的input输入框中 document.body.appendChild(input); // 将输入框暂时创建到实例里面 input.select(); // 选中输入框中的内容 document.execCommand(".

2021-05-22 20:02:41 1193

原创 useEffect实现的防抖函数

export const useDebonce=(value,delay)=>{ const [params,setParams]=useState(value) useEffect(()=>{ const time=setTimeout(()=>setParams(value),delay) return ()=>{ clearTimeout(time) } },[v.

2021-05-10 17:42:15 880 2

原创节流函数

const debonce=function(func,timeout){ let time; return ()=>{ if(time){ clearTimeout(time) } time=setTimeout(function(){ func(); },timeout) } }

2021-05-10 17:03:02 73

原创 Vue下载文件后端返回流

<!DOCTYPE html> <html lan.

2021-05-08 15:56:20 233 2

原创 2021-04-26

enum Sex{ MAN,WOMAN,WITHOUT} //boolean let isflag:boolean=false; //这是 let str:string='汉语' //这是number let count:number=0; //这是数组 let array:Array<string>=['a']; //这是定义的泛型函数的泛型 function getDate<T>(value:T):T { 　　return value; } getDate&l..

2021-04-26 17:03:51 310

原创 provide，inject

<!DOCTYPE html> <ht.

2021-04-18 14:12:07 103

转载每天定时任务执行

imeoutFunc(config, func) { config.runNow && func() let nowTime = new Date().getTime() let timePoints = config.time.split(':').map(i => parseInt(i)) let recent = new Date().setHours(...timePoints) recent >= nowTime || (rec...

2021-04-13 09:38:28 116

转载 js 时间格式化

getFormatDate(timestamp) { timestamp = parseInt(timestamp + '000'); var newDate = new Date(timestamp); Date.prototype.format = function (format) { var date = { 'M+': this.getMonth() + 1, 'd+': thi..

2021-03-30 18:12:37 118

原创 Flutter定时器

_showTimer(context){ var timer; timer=Timer.periodic( Duration(milliseconds: 3000),(timer){ Navigator.pop(context); timer.cancel();//取消定时器 print('卦辞'); } ); }

2021-03-29 13:52:55 435

原创 Flutter修改侧边栏

child:UserAccountsDrawerHeader( accountName: Text('xxx'), accountEmail: Text('xxxx'), currentAccountPicture: CircleAvatar( backgroundImage: NetworkImage('https:/...

2021-03-26 17:17:45 144

原创 Flutter 配置Drawer抽屉

return Scaffold( drawer: Drawer( child: Text('hjhjsdahjfhdjshf'), ), ); //在Scaffold的里面直接配置即可

2021-03-25 15:48:21 191

原创 Flutter 自定义Controller

// import 'dart:html'; import 'package:flutter/material.dart'; /** * 注意在这里必须要继承的有状态的组件以及 * 要混入一个别的组件SingleTickerProviderStateMixin剩下的必须要实例化一个TabController * */ class TabBarsController extends StatefulWidget { @override _TabBarsControllerState.

2021-03-25 15:44:27 1826 1

原创 Flutter 定义多Tabbar

import 'package:flutter/material.dart'; //定义结构话操作 class TabBarsController extends StatefulWidget { @override _TabBarsControllerState createState() => _TabBarsControllerState(); } class _TabBarsControllerState extends State<TabBarsController>.

2021-03-25 14:46:41 526

原创获取url上的参数

export const getUrlParams = (url, key) => { let search = url && url.split("?")[1]; var theRequest = {}; let query = search && search.split("&"); for (let i = 0; i < query.length; i++) { theRequest[query[i].split("=")[.

2021-03-19 18:16:40 150

原创 js递归替换数组对象字段名称

const TreeDataSource=(arr)=>{ if(!Array.isArray(Array)){return;} return arr.map((v,i)=>{ return { ...v, key:v.id, title:v.typeName, order: v.sort, isClose: ...

2021-02-16 13:17:49 2006

原创微信小程序踩坑记

1.使用JSON.parse()的时候失败解决方案：将序列化后的字符串复制出来以后发现在最后的末尾多了一些别的符号利用字符串的截取掉即可 2.小程序中保存照片到手机相册(代码示例) // pages/question/question.js const app = getApp() const { globalData } = app; Page({ /** * 页面的初始数据 */ data: { OrderUserInfo: { } },

2021-02-09 15:31:58 145

原创 React 权限操作

import React, { Component, Fragment, Suspense } from 'react' import { BrowserRouter as Router, Redirect, Route, Switch } from 'react-router-dom' import Login from '../login' import ApIRouters from './routers' class AuthRouters extends Component { ren.

2021-01-26 18:24:59 271

原创 Vue权限动态路由Array转成功Tree

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <script.

2021-01-23 23:17:52 196

原创 React的一些小API（路由懒加载,setState的参数类型）

import React, { Component, setState, lazy, Suspense } from 'react' import { Route, Link } from 'react-router-dom' /** * setState可以传递一个对象也可以传递一个函数一个参数如果传递函数会上接受两个参数一个state,props * 函数的方式默认会返回更新以后的state数值 * 路由的懒加载 */ // export default class App extends .

2021-01-21 03:08:03 366

umi_tableData.zip

Dart.7z的基础语法练习

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