simple email validation in javascript

Form form onsubmit= "return Checkform (This)" name= "form" >In the input tag inside the name corresponding (name password age (int) email) can be such as: class= "Inputgri" name= "email c2> "/>JavaScript basic Form Validation

See the jquery verification framework, in the use of the time, in fact, is still very dizzy, very troublesome, the use of the time code is not concise, so have to get a own jquery verification framework of the plan, the basic principle is to input, select, textarea these three types of control to do calibration, Define a custom attribute inside as a test. In addition, the use of JS to do i18n internationalization, through the language of cookies, call different JS language packs, for their own d

Email: JavaScript form Validation-Mailbox verification

A JavaScript Regular Expressions1.EXEC retrieves the value specified in the string, returns the found value, and determines its location2.test retrieves the value specified in the string, returning True or false3. Creation of regular expression objects:(1) Mode one:Var rgex=new RegExp ("[0-9]", "mode");(2) Way two: simple notation, with double slash//to enclose the contents of regular expressionsExample 1 (

Form validation is essential for almost every website that needs to be registered or logged in. Some of the validation is very complex, it can be said that a variety of requirements for you, but this chapter only describes the simplest form of validation, is to determine whether the empty, some of the requirements of the lower Web site has been satisfied with the

The Recent validation of JavaScript data types has a new understanding that can be judged so simple and comprehensive. We have customized methods such as Isstring,isnumber, IsDate, IsError, Isregexp, Isboolean, IsNull, isundefined, IsObject, etc. Now show yourself the JavaScript data type

about form validation, it is best to use regular expressions, of course, if the simple do not bother to write regular expressions, in general, use the Internet to search a lot of regular expressions, all kinds of, everything, The following example is a sample of JavaScript validation input decimal values: function Isfu

① determine if a String conforms to a regular requirementPatt.test (String);② find a string that matches the regular substringPatt.exec (String);"Example" form submission:A. User name cannot be empty, only numbers and letters, 6-11-bitB.email cannot be empty and properly formattedDOCTYPE HTML>HTMLLang= "en">Head> MetaCharSet= "UTF-8"> title>Documenttitle> style>Table{width:400px;Height:400px;Border:0;Border-collapse:collapse;background:Orange; }TD{Border:1px solid Gray;cursor:Poi

Native JavaScript phone number verification, email verification, id verification. When used, pass in the string to be validated, return ture to represent conformance, return false code does not conform.Use: document.getElementById ("Btnphone"). Onclick=function () { alert (Validationhandler.isphone ( document.getElementById ("Phoneinput"). Value) ==true? " Legal ":" Illegal ") }; document.getEl

Usually there is a lot of data verification work in our HTML page forms, and it is very tedious and boring to write JavaScript code for a lot of verification forms. Many programmers often miss this job. So I wrote this JavaScript code for your use. It's easy to use. let's take it back and expand it. a registration box is used for form verification. Simple veri

name:document.getElementById ("name"), password:document.getElementById (" Password "), R_password:document.getElementById (" R_password "), email:document.getElementById (" email ") }; Ele.name.onblur = function () {//name loses focus detects checkname (ele.name.value); } Ele.password.onblur = function () {//password loses focus detects CHECKPASSW (Ele.password.value,ele. R_password.value); }

button element:In the example above, the function named Displaydate will be executed when the button is clicked.Use HTML DOM to assign eventsHTML DOM allows you to use JavaScript to assign events to HTML elementsIn the example above, a function named Displaydate is assigned to the HTML element of id= "MYBTN".The JavaScript function will be executed when the button is clicked.OnLoad and OnUnload EventsThe o

Form validation is almost indispensable, some form validation is done in the background, and some are using JavaScript in the front-end to complete the basic verification, so that you can effectively reduce the pressure on the server, the following describes the most simple JS implementation of form verification. The c

features of HTML 4.0 is the ability to enable HTML events to trigger actions in the browser, such as when a user clicks on an HTML element and launches a JavaScript. The following is a list of attributes that can be inserted into an HTML tag to define an event action.OnClick an event handle that is invoked when a user taps an object. OnDblClick an event handle that is called when the user double-clicks an object. The onfocus element

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){ 4 window.loaction.href ="cool.html"; 5 } 6 } A different approach to type conversionsHow do I convert a string to a number? I know parseint ("123", 10), but there is no good way to look at the following.View Source print? 1 varnum1 ="123"; 2 num1 = num1*1; 3 varnum2 ="123";

Simple implementation of C # compatibility with Javascript, This article introduces a newly implemented plug-in for c # interaction with js. The requirement comes from a discussion with a friend. The main dialog is as follows: Friend: Recently I want to simulate some data to test the interface I have written, but it is too troublesome to manually write the test data. Myself: Yes, there are a lot of open-sou

= 0,l = Object.length;i it = Object[i];Func (It,i);}};Return T? OBJECT[0]: object;};var ajax = function (type,url,func,data) {if (window. ActiveXObject) {var xmlHttp = new ActiveXObject ("Microsoft.XMLHTTP");} else {var xmlhttp=new xmlhttprequest ();}Xmlhttp.open (type,url,true);Xmlhttp.onreadystatechange=function () {if (xmlhttp.readystate = = 4)if (Xmlhttp.status = = 200)if (func) func (Xmlhttp.responsetext);};Xmlhttp.setrequestheader ("Content-type", "application/x-www-form-urlencoded");Xmlh

Html: (Span control Click event, disabled Invalid) Js: /* Send mail /function SendEmail () {//Email authenticated message var me = $ ("#sendAgain"); Me.time =; (function () { if (Me.time > 1) { me.time--; Me.html ("2") ("+ Me.time +") should be sent again; SetTimeout (Arguments.callee, 1000); Me.attr ("onclick", ""); } else { me.html ("2. Send the activation message again"); Me.attr ("onclick"