Validate HTML form input with JavaScript

Possible Duplicate: Validate email address in Javascript? I have an HTML form that uses PHP/MySQL to post to a database. In the email section of the form, I want the user to be displayed an error message if he or she types in an email address that is not in valid email address format. I am modeling off of a code like this, but I cannot get it work. Note that whenever I hit the submit butt

使用JavaScript验证HTML表单输入

可能重复: 在JavaScript中验证电子邮件地址? 我有一个使用PHP / MySQL发布到数据库的HTML表单。 在表单的电子邮件部分,如果用户输入的电子邮件地址不是有效的电子邮件地址格式,我希望显示错误消息给用户。 我正在模拟这样的代码,但我无法实现它的工作。 请注意,无论何时我点击表单上的提交按钮,表单都会提交,并且PHP操作正常。 问题是我可以在窗体中输入任何我喜欢的东西,它会传递正常。 我希望它显示错误消

javascript email validation not working

This question already has an answer here: How to validate an email address in JavaScript? 68 answers var emailID = document.["myForm"]["email"].value; ^^ Syntax error. Dot-notation or Square-bracket-notation. Pick only one (per property). I'm surprised that Firebug / Chrome Developer Tools / Dragonfly / etc didn't give you a clear pointer to that when you we

JavaScript电子邮件验证不起作用

这个问题在这里已经有了答案: 如何验证JavaScript中的电子邮件地址? 68个答案 var emailID = document.["myForm"]["email"].value; ^^ 语法错误。 点符号或方括号符号。 只选择一个(每个属性)。 我很惊讶Firebug / Chrome开发者工具/蜻蜓/等没有给你一个明确的指示,当你测试。

Email validation with regex

This question already has an answer here: How to validate an email address in JavaScript? 68 answers With your currently setted regular expression your are only aceppting one char at the beginning and one char at the end. A valid email for your regex would be for example a@test.a But you dont want that so change it to: var regex = /^w+@w+.w{2,3}$/; You missed the plus char which means t

用正则表达式进行邮件验证

这个问题在这里已经有了答案: 如何验证JavaScript中的电子邮件地址? 68个答案 用你当前设置的正则表达式,你只需在开始时填入一个字符,并在最后填入一个字符。 一个有效的电子邮件为您的正则表达式将例如a@test.a 但是你不想var regex = /^w+@w+.w{2,3}$/;其更改为: var regex = /^w+@w+.w{2,3}$/; 您错过了加号字符,意味着您至少可以输入一个或多个字符。 顶级域通常由两个或三个字符组成,因此您可以限制它。

jquery valid email check

Possible Duplicate: Validate email address in Javascript? I am just a beginner in jquery.I have used email field in my form. The form shouldn't submit if the email field is empty. I used the following code if(document.getElementById('emailaddress').value == ''){ alert('Enter the Email Address'); document.getElementById('emailaddress').focus(); return false; } How can i check the ente

jquery有效的电子邮件检查

可能重复: 在JavaScript中验证电子邮件地址? 我只是jQuery中的初学者。我在表单中使用了电子邮件字段。 如果电子邮件字段为空,则表单不应提交。 我使用了下面的代码 if(document.getElementById('emailaddress').value == ''){ alert('Enter the Email Address'); document.getElementById('emailaddress').focus(); return false; } 我怎样才能检查输入的电子邮件是一个有效的使用简单的jQuery? 你最好的选择是

Forcing a text field to be a valid email?

This question already has an answer here: How to validate an email address in JavaScript? 68 answers Support only newer browsers? Try this: <input type="email" name="emailaddress"> Note that support is somewhat limited, but it might work for you if it falls into these browsers: http://caniuse.com/#feat=forms On a related note: Validate email address in JavaScript? function Is

强制一个文本字段是一个有效的电子邮件?

这个问题在这里已经有了答案: 如何验证JavaScript中的电子邮件地址? 68个答案 只支持较新的浏览器? 尝试这个: <input type="email" name="emailaddress"> 请注意,支持有限,但如果它落入这些浏览器中,它可能适用于您: http://caniuse.com/#feat=forms 在相关说明中: 在JavaScript中验证电子邮件地址? function IsEmail(email) { var regex = /^([a-zA-Z0-9_.+-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z

How to do Email validation using Regular expression in Typescript

This question already has an answer here: How to validate an email address in JavaScript? 68 answers Problem is with the regex format given. Give it without quotes (') like this regexp = new RegExp(/^(([^<>()[]\.,;:s@"]+(.[^<>()[]\.,;:s@"]+)*)|(".+"))@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}])|(([a-zA-Z-0-9]+.)+[a-zA-Z]{2,}))$/);

如何在Typescript中使用正则表达式进行电子邮件验证

这个问题在这里已经有了答案: 如何验证JavaScript中的电子邮件地址? 68个答案 问题在于给出的正则表达式格式。 给它没有像这样的引号(') regexp = new RegExp(/^(([^<>()[]\.,;:s@"]+(.[^<>()[]\.,;:s@"]+)*)|(".+"))@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}])|(([a-zA-Z-0-9]+.)+[a-zA-Z]{2,}))$/);

JavaScript Validation for Email Id

Duplicate : Validate email address in JavaScript? I want to validate emailid using JavaScript. I am using following code: var emailPat = /^(".*"|[A-Za-z]w*)@([d{1,3}(.d{1,3}){3}]|[A-Za-z]w*(.[A-Za-z]w*)+)$/ ; var emailid=document.getElementById("<%=txtEmail.ClientID %>").value; var matchArray = emailid.match(emailPat); if (txtemail.value!="") { if (matchArray == null) {

电子邮件ID的JavaScript验证

重复: 在JavaScript中验证电子邮件地址? 我想使用JavaScript验证emailid。 我正在使用以下代码: var emailPat = /^(".*"|[A-Za-z]w*)@([d{1,3}(.d{1,3}){3}]|[A-Za-z]w*(.[A-Za-z]w*)+)$/ ; var emailid=document.getElementById("<%=txtEmail.ClientID %>").value; var matchArray = emailid.match(emailPat); if (txtemail.value!="") { if (matchArray == null) { alert("Your email address se

Email Validation with JavaScript

Possible Duplicate: Validate email address in Javascript? This is my first post and I have a small issue. I'm trying to validate an email address on a form, but with no luck. I found this snippet on the internet but it doesn't seem to be working. I'm using Javascript at the moment to validate it. I don't usually use JS, so any help would be appreciated. <script type="t

用JavaScript验证电子邮件

可能重复: 在JavaScript中验证电子邮件地址? 这是我的第一篇文章,我有一个小问题。 我试图验证表单上的电子邮件地址,但没有运气。 我在互联网上发现了这个片段,但它似乎没有工作。 我现在使用Javascript来验证它。 我通常不使用JS,所以任何帮助,将不胜感激。 <script type="text/javascript"> function ValidateEmail(inputText) { var mailformat = /^w+([.-]?w+)*@w+([.-]?w+)*(.w{2,

Jquery Value match Regex

This question already has an answer here: How to validate an email address in JavaScript? 68 answers Pass a string to RegExp or create a regex using the // syntax Call regex.test(string) , not string.test(regex) So jQuery(function () { $(".mail").keyup(function () { var VAL = this.value; var email = new RegExp('^[A-Z0-9._%+-]+@[A-Z0-9.-]+.[A-Z]{2,4}$'); if

Jquery值匹配正则表达式

这个问题在这里已经有了答案: 如何验证JavaScript中的电子邮件地址? 68个答案 将一个字符串传递给RegExp或使用//语法创建一个正则表达式 调用regex.test(string) ,而不是string.test(regex) 所以 jQuery(function () { $(".mail").keyup(function () { var VAL = this.value; var email = new RegExp('^[A-Z0-9._%+-]+@[A-Z0-9.-]+.[A-Z]{2,4}$'); if (email.test(VAL)) {

JavaScript Regular Expression Email Validation

This question already has an answer here: How to validate an email address in JavaScript? 68 answers How to validate an email address using a regular expression? 74 answers If you define your regular expression as a string then all backslashes need to be escaped, so instead of 'w' you should have '\w'. Alternatively, define it as a regular expression: var pattern = /^w+

JavaScript正则表达式电子邮件验证

这个问题在这里已经有了答案: 如何验证JavaScript中的电子邮件地址? 68个答案 如何使用正则表达式验证电子邮件地址? 74个答案 如果将正则表达式定义为字符串,则所有反斜杠都需要转义,所以不要使用' w',而应该使用'\ w'。 或者,将其定义为正则表达式: var pattern = /^w+@[a-zA-Z_]+?.[a-zA-Z]{2,3}$/; 顺便说一句,请不要验证客户端的电子邮件地址。 无论如何,你的正则表达式太简单了,