08 2021 档案
摘要：<template> <div> <h1>{{count}}</h1> <h1>{{double}}</h1> <button @click="increase">+1</button> </div> </template> <script lang="ts"> import { ref,compu
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摘要：ref,computed 用法 <template> <div> <h1>{{count}}</h1> <h1>{{double}}</h1> <button @click="increase">+1</button> </div> </template> <script lang="ts"> im
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摘要：import React,{useState} from 'react' export default function ComplexHookState() { const [friends, setFriends] = useState(['李雷','科比']) const [students,
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摘要：yarn add antdyarn add @ant-design/iconsyarn add moment // 配置andt 主题yarn add @craco/craco// 修改配置命令 "scripts": { "start": "craco start", "build": "craco
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摘要：import React, { PureComponent } from 'react' // yarn add classnames import classNames from 'classnames' export default class app extends PureComponent
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摘要：yarn add styled-components 1 import styled from 'styled-components' export const HomeWrapper = styled.div ` font-size:20px; color:red; .banner{ backgr
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摘要：import React, { PureComponent } from 'react' function withRenderTime(WrappedComponent){ return class extends PureComponent{ componentWillMount() { thi
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摘要：import React, { PureComponent } from 'react' // class LoginPage extends PureComponent { render() { return ( <div> <h2>LoginPage</h2> </div> ) } } func
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摘要：import React, { PureComponent, createContext } from 'react' import { render } from 'react-dom' // 定义一个高阶组件 function withUser(WrappedComponent){ return
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摘要：import React, { PureComponent } from 'react' // 定义一个高阶组件 function enhanceRegionProps(WrappedComponent){ return props => { return <WrappedComponent {..
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摘要：import React, { PureComponent,createRef } from 'react' export default class App extends PureComponent { constructor(props){ super(props) this.username
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摘要：import React, { PureComponent } from 'react' export default class App extends PureComponent { constructor(props){ super(props) this.state = { username
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摘要：import React, { PureComponent,createRef } from 'react' class Counter extends PureComponent { constructor(props){ super(props) this.state = { counter:0
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摘要：import React, { PureComponent } from 'react' import {EventEmitter} from 'events'; // yarn add events // 事件总线 event bus const eventBus = new EventEmitt
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摘要：import React, { PureComponent } from 'react' export default class App extends PureComponent { constructor(props){ super(props) this.state = { friends:
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摘要：function wxToPromise(method, options = {}) { return new Promise((resolve, reject) => { options.success = resolve options.fail = err => { reject(err) }
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摘要：import React, { Component } from 'react' export default class App extends Component { constructor(props){ super(props) this.state = { counter:0, name:
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摘要：import React, { Component } from 'react' export default class App extends Component { constructor(props){ super(props) this.state = { counter:0 } } re
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摘要：import React, { Component } from 'react' export default class App extends Component { constructor(props){ super(props) this.state = { counter:0 } } re
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摘要：import React, { Component } from 'react' const userContext = React.createContext({ nickname:'AAA', level:0 }) class ProfileHeader extends Component{ r
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摘要：import React, { Component } from 'react' // props 从上向下一层一层传递 function ProfileHeader(props){ console.log(props); return ( <div> <h2>用户昵称: {props.nickna
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摘要：import React, { Component } from 'react' // import NavBar from './NavBar' import NavBar2 from './NavBar-2' export default class App extends Component
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摘要：app.js import React, { Component } from 'react' import TabControll from './tabControll' export default class App extends Component { constructor(props
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：import React, { Component } from 'react' class ChildCpn extends Component{ render(){ // console.log(this.props); // {name: "Eric", age: "28"} let {nam
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摘要：import React, { Component } from 'react' import PropTypes from 'prop-types'; function ChildCpn(props){ // console.log(props); // {name: "Eric", age: "
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摘要：import React, { Component } from 'react' class Cpn extends Component{ render(){ return ( <div>我是Cpn组件</div> ) } componentWillUnmount(){ console.log('调
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摘要：import React, { Component } from 'react' class Header extends Component{ render(){ return ( <div>我是Header组件</div> ) } } class Banner extends Component
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摘要：import React,{Component} from "react"; // export default class App extends Component{ // constructor(){ // super(); // this.state = { // message:'你好啊'
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：// 1 创建AJAX 实例对象 let xhr = new XMLHttpRequest; // 2 打开 URL(发送请求前的一些处理) xhr.open('get','./data.json',true); // 3 监听 ajax 状态信息 xhr.onreadystatechange =
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摘要：import 'package:flutter/material.dart'; import 'tabs/Home.dart'; import 'tabs/Setting.dart'; import 'tabs/Category.dart'; class Tabs extends StatefulW
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摘要：import 'package:flutter/material.dart'; class ButtonPage extends StatelessWidget { const ButtonPage({Key? key}) : super(key: key); @override Widget bu
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摘要：https://gitee.com/eric167/js <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <met
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摘要：(function () { // 插件核心:OOP的模式，可以创建单独的实例，这样实现私有属性和公有方法的有效管理 class zTree { constructor(element, options) { // init params let self = this, len = argumen
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摘要：import 'package:flutter/material.dart'; class TabBarControllerPage extends StatefulWidget { TabBarControllerPage({Key? key}) : super(key: key); @overr
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摘要：import 'package:flutter/material.dart'; class AppBarDemoPage extends StatelessWidget { const AppBarDemoPage({Key? key}) : super(key: key); @override W
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摘要：import 'package:flutter/material.dart'; class AppBarDemoPage extends StatelessWidget { const AppBarDemoPage({Key? key}) : super(key: key); @override W
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摘要：(function($){ if(!$ || !$.prototype.jquery) throw new ReferenceError('must import jquery'); // 向其原型获取方法 $.fn.extend({ zTree(data,callback){ typeof cal
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摘要：(function(){ function LazyImage(options){ // init params options = options || {}; let defaults = { context:document, attr:'lazy-image', threshold:1, s
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摘要：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <meta name="viewport" content="width=device
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摘要：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <meta name="viewport" content="width=device
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摘要：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>单张图片懒加载案例</title> <
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi
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摘要：import 'package:flutter/material.dart'; import 'tabs/Home.dart'; import 'tabs/Setting.dart'; import 'tabs/Category.dart'; class Tabs extends StatefulW
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摘要：import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override W
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摘要：import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override W
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摘要：import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override W
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摘要：import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override W
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摘要：import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override W
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摘要：import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override W
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摘要：import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override W
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摘要：import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override W
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摘要：1 import 'package:flutter/material.dart'; import 'res/listData.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override
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