Tiago Duarte

.NET Regular Expression for Email <asp:RegularExpressionValidator ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" ID="regexEmail" runat="server" ControlToValidate="txtEmail" ValidationGroup="validateFields" ErrorMessage="*"></asp:RegularExpressionValidator> JavaScript Regular Expression for Email var astemail = document.getElementById("astemail"); //valida email var objemail = document.getElementById("email"); var email = objemail.value; //var regexpemail = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/; var regexpemail = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/; if (!regexpemail.test(email)) { astemail.style.color = "red"; astemail.style.visibility = "visible"; //return false; } else { astemail.style.color = "white"; astemail.style.visibility = "hidden"; } JQuery Regular Expression for Email ...