React JS Basic usage [ES5, pure front-end notation]

Last Update:2016-12-30 Source: Internet

Author: User

Tags button type

Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Reference: http://www.ruanyifeng.com/blog/2015/03/react.html

Note: 1. Must be placed on the server and cannot be run on the file system

<!doctype html>
　　
Login.css
. login{    background-color:red;}. header{    height:30px;    Background-color:gray;}. userrole{    height:80px;    Background-color:lightcyan;}. userid{}.userpassword{}.submitbuttonenabled{    Color:blue;}. submitbuttondisabled{    Color:gray;}
　　
Login.js
var Login = React.createclass ({//props type and whether proptypes must be filled in: {title:React.PropTypes.string.isRequired,        Role:React.PropTypes.string.isRequired,}, Getdefaultprops:function () {Console.log ("getdefaultprops");    return {title: ' Default title ', Role: ' Default role ',};        },//Initialize state getinitialstate:function () {Console.log ("getinitialstate");    return {userId: ', UserPassword: ', Submitenabled:false,};        }, Componentwillmount:function () {Console.log ("Componentwillmount");    This.timer = setinterval (function () {}.bind (this), 100);        }, Componentdidmount:function () {Console.log ("Componentdidmount");    This.timer = setinterval (function () {}.bind (this), 100);        }, Componentwillunmount:function () {Console.log ("Componentwillunmount"); This.timer = setinterval (function () {}.bind (this), 100); },//event handleclicksubmit:function () {if (This.state.userId.length < 1 | | this.state.userPassword.leng        Th < 1) {return;        } alert ("Submit");        $.get ("Http://publicschool.sinaapp.com/test/test.php?name=jack", function (Result) {Console.log (result); }.bind (this));//bind this, ' callback function ' to use ' this '}, Handlechangeid:function () {this.setstate ({userId: This.refs._ref_userid.value, submitenabled:this.refs._ref_userid.value.length > 0 && this.refs._ref_    UserPassword.value.length > 0,});             }, Handlechangepassword:function () {this.setstate ({userpassword:this.refs._ref_userpassword.value, Submitenabled:this.refs._ref_userid.value.length > 0 && this.refs._ref_userpassword.value.length &G T    0,}); },//Render method Render:function () {return (<div classname= "Login" > <div class NAme= "Header" > {this.props.title} </div> <div classname= "Userr Ole "> {this.props.role} </div> <input classname=" UserId "type = "text" ref= "_ref_userid" placeholder= "User name" Onchange={this.handlechangeid}/> <input classname= "UserP                Assword "type=" password "ref=" _ref_userpassword "placeholder=" password "Onchange={this.handlechangepassword}/> <button type= "button" Onclick={this.handleclicksubmit} classname={this.state.submitenabled? "    Submitbuttonenabled ":" submitbuttondisabled "}> login </button> </div>); },}); Reactdom.render (<login title= "I am the title" role= "Student's parent"/&GT; document.getElementById (' root '));
　　
React JS Basic usage [ES5, pure front-end notation]

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

Sales Support

1 on 1 presale consultation

Chat Contact Sales
After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

Open a Ticket
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

Learn More