[React] React Fundamentals: Using Refs to Access Components

When you are using React components you need to be able to access specific references to individual components. This is done by defining a ref. <!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <…

[React Fundamentals] Using Refs to Access Components

When you are using React components you need to be able to access specific references to individual components. This is done by defining a ref. Notice: 'ref' only works in class component, not in statless component. If we don't add "ref", three…

[React] React Fundamentals: Integrating Components with D3 and AngularJS

Since React is only interested in the V (view) of MVC, it plays well with other toolkits and frameworks. This includes AngularJS and D3. A app with React and D3.js: /** @jsx React.DOM */ var App = React.createClass({ getInitialState: function () { re…

在 React 组件中使用 Refs 指南

原文:Fullstack React's Guide to using Refs in React Components作者:Yomi Eluwande译者:博轩译文:https://segmentfault.com/a/1190000019277029 使用 React 时,我们的默认思维方式应该是不会强制修改 DOM ,而是通过传入 props 重新渲染组件.但是,有些情况却无法避免修改 DOM . React 中的 Refs 提供了一种访问 render() 方法中创建的 React …

[React] Use React.cloneElement to Extend Functionality of Children Components

We can utilize React.cloneElement in order to create new components with extended data or functionality. class App extends React.Component { render(){ return ( <Buttons> <button value="A">A</button> <button value="B&quo…

【React】282- 在 React 组件中使用 Refs 指南

英文:Yomi Eluwande 译文:joking_zhang https://segmentfault.com/a/1190000019277029 使用 React 时,我们的默认思维方式应该是不会强制修改 DOM ,而是通过传入 props 重新渲染组件.但是,有些情况却无法避免修改 DOM . React 中的 Refs 提供了一种访问 render() 方法中创建的 React 元素(或 DOM 节点)的方法. 当父组件需要与子组件交互时,我们通常使用 props 来传递相关信息…

[React] react+redux+router+webpack+antd环境搭建一版

好久之前搭建的一个react执行环境,受历史影响是webpack3.10.0和webpack-dev-server2.7.1的环境,新项目准备用webpack4重新弄弄了,旧的记录就合并发布了(在没有快速目录的地方写的,之前是分为了10个文件) 所使用的一些包可能进过不断的迭代升级已不支持 01.初始化项目(安装需要的包) //生成package.json npm init 安装基础包 npm install react react-dom --save npm install webpack@…

React/React Native 的ES5 ES6写法对照表

//es6与es5的区别很多React/React Native的初学者都被ES6的问题迷惑:各路大神都建议我们直接学习ES6的语法(class Foo extends React.Component),然而网上搜到的很多教程和例子都是ES5版本的,所以很多人在学习的时候连照猫画虎都不知道怎么做.今天在此整理了一些ES5和ES6的写法对照表,希望大家以后读到ES5的代码,也能通过对照,在ES6下实现相同的功能. 1.在ES5里,如果使用CommonJS标准,引入React包基本通过require…

问题-Error creating object. Please verify that the Microsoft Data Access Components 2.1(or later) have been properly installed.

问题现象:软件在启动时报如下错误信息:Exception Exception in module zhujiangguanjia.exe at 001da37f. Error creating object. Please verify that the Microsoft Data Access Components 2.1(or later) have been properly installed. 问题原因:是启动程序时访问ACCESS库时没有WIN的组件或是版本过低. 解决方法:查看组…

React/React Native 的ES5 ES6写法对照表－b

很多React/React Native的初学者都被ES6的问题迷惑:各路大神都建议我们直接学习ES6的语法(class Foo extends React.Component),然而网上搜到的很多教程和例子都是ES5版本的,所以很多人在学习的时候连照猫画虎都不知道怎么做.今天在此整理了一些ES5和ES6的写法对照表,希望大家以后读到ES5的代码,也能通过对照,在ES6下实现相同的功能. 模块引用在ES5里,如果使用CommonJS标准,引入React包基本通过require进行,代码类似这…

Windows 的 Oracle Data Access Components (ODAC)

下载 x64bit https://www.oracle.com/technetwork/cn/database/windows/downloads/index.html 适用于 Windows 的 Oracle Data Access Components (ODAC) 适用于 Windows 的 Oracle Data Access Components (ODAC) 由 Oracle 客户端驱动程序组成,包括 ODP.NET.ODBC.OLE DB.OO4O 以及 Oracle Serv…

WIN7系统 64位出现 Net Framework 数据提供程序要求 Microsoft Data Access Components(MDAC).

WIN7系统 64位出现 Net Framework 数据提供程序要求 Microsoft Data Access Components(MDAC).请安装 Microsoft Data Access Components(MDAC)2.6或更高的版本.怎么解决,已经下载了2.8版本安装了,但是还是不顶用. 2015-12-02 10:51网友采纳这应该是你安装的系统有精简过系统文件,导致安装一些程序缺乏文件出错.换个系统吧.可到我的系统贴吧下载GHO系统与GHO安装工具,可以在进入现在…

React: React组件的生命周期

一.简介在前面的第二篇博文中对组件的生命周期虽然做了一个大略介绍,但总感觉说的过于简单,毕竟生命周期是React组件的核心部分.在我们熟练使用React挂载和合成组件来创建应用表现层的过程中,针对数据异步或延时问题,只有充分利用组件的生命周期来把握框架载入和数据处理的时机,才能将组件性能发挥到合理水平,并提高应用程序的健壮性.基本来说,组件的生命周期可分为挂载生命周期和更新生命周期两大部分,它们都包括一系列方法,这些方法在组件渲染前后会被触发,事实上,render方法本身也是组件生命周期的一部…

React: React的属性验证机制

一.简介在开发中,属性变量类型的验证,几乎是任何语言都必须关注的问题,因为如果传入的数据类型不对,轻者程序运行仅仅是给出警告⚠️,严重的会直接导致程序中断,APP闪退或者web页面挂掉,这是很严重的bug问题.如我们所知,JavaScript是一种弱类型的语言,这意味着开发者可以随意地修改变量值的数据类型,而且JavaScript虚拟机对此操作并不会产生异议,虽然这种机制大大地提高了编程的灵活性,但是也隐藏了一个极大的crash风险.React组件为此提供了一种声明和验证属性类型的方法,称为自…

React/react相关小结

React React组件由React元素组成,React组件使用React.Component或React.PureComponent来生成:React元素使用JSX的语法来编写或使用React.createElement()来生成: Redux action是一个对象,其中type字段是必须的.action是store数据的唯一来源:一般通过store.dispatch()把action传到store: action创建函数是生成action的函数(通常返回一个对象) reducers指定了…

[React] React Fundamentals: Component Lifecycle - Mounting Basics

React components have a lifecycle, and you are able to access specific phases of that lifecycle. This lesson will introduce mounting and unmounting of your React components. Mounting: componentWillMount Invoked once, both on the client and server, im…

[React] React Fundamentals: Accessing Child Properties

When you're building your React components, you'll probably want to access child properties of the markup. Parent can read its children by accessing the special this.props.children prop.this.props.children is an opaque data structure: use the React.C…

[React] React Fundamentals: Mixins

Mixins will allow you to apply behaviors to multiple React components. Components are the best way to reuse code in React, but sometimes very different components may share some common functionality. These are sometimes called cross-cutting concerns.…

[React] React Fundamentals: Component Lifecycle - Updating

The React component lifecycle will allow you to update your components at runtime. This lesson will explore how to do that. Updating: componentWillReceiveProps componentWillReceiveProps(object nextProps) Invoked when a component is receiving new prop…

[React] React Fundamentals: transferPropsTo

the transferPropsTo method lets you easily push properties into your components to easily customize attributes. From last two exmaples, we have BButton adn BHeart set up. var BButton = React.createClass({ render: function() { return ( <a className=&quo…

[React] React Fundamentals: Owner Ownee Relationship

The owner-ownee relationship is used to designate a parent-child relationship with React components as it differs from the DOM relationship. When one component renders another component, this is what React refers to as the "owner-ownee relationship,&…

[React] React Fundamentals: State Basics

State is used for properties on a component that will change, versus static properties that are passed in. This lesson will introduce you to taking input within your React components. Properties vs. State When you think of properties, you should be t…

[React] React Fundamentals: Build a JSX Live Compiler

we want to have the ability to write JSX and see the output live in the browser. <!doctype html> <html lang="en"> <head> <link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="styles…

[React] React Fundamentals: with-addons - ReactLink

It can be tedious to type out all the boilerplate needed to get the DOM and states in React to synchronize. Luckily, React provides a version of the toolkit with a selection of available addons. This lesson is going to dig into ReactLink, and how thi…