Simple display of component life cycle in React-webpack,react

Source: Internet
Author: User

First configure the next webpack.config.js

module.exports={    entry:{        Demo:'./app/app.js '    },    output:{        path:__dirname+ '/build ',        filename:' [name].js ',        Library:' game ',        librarytarget:' UMD '     },    module:{        loaders:[            {                test:/\.js$/,                loader:' Jsx-loader '             }        ]    }}

Import file entry, integrated JS output output,loaders: Need to Jsx-loader convert jsx to JS

Create HTML

<!DOCTYPE HTML><HTML><Head>    <MetaCharSet= "Utf-8">    <title>Title</title>    <Metaname= "keywords"content="">    <Metaname= "description"content=""></Head><Body>    <DivID= "Out"></Div></Body><Scripttype= "Text/javascript"src= "Build/demo.js"></Script></HTML>

The entry file in the above configuration file./app/app.js

To create this file first

varHead=require ('./app1.js '));varCon=require ('./app2.js '));varFooter=require ('./app3.js '));varReact=require (' React ');varReactdom=require (' React-dom ');vardemo=React.createclass ({render:function(){            return(<div> }}) Reactdom.render (<demo/>,document.getelementbyid (' out '));

Use require to import the dependencies first, then create the components with react

To create a dependent APP1,APP2,APP3 3 JS

var React=require (' React '); var head=React.createclass ({        render:function() {            return (<div>                     Head                         </div>)        }    ) module.exports=head;

Simple example creation is done, required react,react-dom,jsx-loader, we can use NPM install to create dependencies into the project.

The life cycle of a component

1.

Getdefaultprops------>getinitialstate------>componentwillmount------>render------> Componentdidmount------> Component operation

2. During the operation

Divided into two state states and external props changes

State

Shouldcomponentupdate------> If true------>componentwillupdate------>render------> Componentdidupdate

Props

Componentwillreceiveprops------>shouldcomponentupdate .....

3. Uninstalling components

Componentwillunmount

Simple display of component life cycle in React-webpack,react

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