电子邮件表单验证-确保它只有一个'@'符号 [英] Email Form Validation - Ensuring it only has one '@' symbol

问题描述

我正在尝试验证表单，以确保输入的电子邮件地址值格式正确.除了检查它仅包含一个'@'符号外，我一切正常.到目前为止，这是我的代码

I am trying to validate a form to ensure that the entered email address value is in the correct format. I have everything working except checking that it only contains one '@' symbol. This is my code so far

var x = document.forms["registration"]["email"].value;
var atpos = x.indexOf("@");
var dotpos = x.lastIndexOf(".");
if (atpos< 1 || dotpos<atpos+2 || dotpos+2>=x.length) {
    alert("Not a valid e-mail address");
    return false;

推荐答案

检查并验证单个'@'.下面提到的一个是使用的标准电子邮件正则表达式:

To check and validate for single '@'. The below mentioned one is the standard Email Regex which is been used:

\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*

这篇关于电子邮件表单验证-确保它只有一个'@'符号的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！