// Validate E-mail Address (JavaScript 1.0 version) // // $Id: email.js,v 1.11 2006/05/05 21:18:27 jreed Exp $ // // $Log: email.js,v $ // Revision 1.11 2006/05/05 21:18:27 jreed // Added regular expression version of validEmail() function // // Revision 1.10 2006/05/03 18:05:28 jseverson // Setting language variable from get parameter if present. // // Revision 1.9 2006/03/22 19:16:00 jseverson // Adding multi language support for alerts // // Revision 1.8 2006/02/25 00:53:09 jreed // In addition to selecting a field after failure, also set the focus // // Revision 1.7 2004/08/25 01:55:11 jreed // Split validEmail into two function - validEmailText can be passed the text value // // Revision 1.6 2004/07/30 21:25:35 jreed // Modified validemail() - when invalid select existing value rather than blanking it // // Revision 1.5 2003/10/31 18:20:48 jseverson // fixed bug with emails ending in periods. Bug 3603 // // Revision 1.4 2002/02/20 18:42:46 nwiggins // // # removes script tags - forces usage as a javascript src include. no php includes // // Revision 1.3 2001/07/18 23:07:57 jneil // Fixed some problems. // // Revision 1.2 2001/07/02 06:11:18 vhegde // Revision 1.1 2001/05/21 15:53:53 jneil // Initial Upload. // /************************************************************** Description: Email address must be of form [email protected] i.e., there must be at least one character before the @ there must be at least one character before and after the . the characters @ and . are both required Dependencies: alltrim, isEmpty, occurs of string.js **************************************************************/ function validEmail(objFld) { if (!validEmailText(objFld.value)) { alert('Please enter a valid email address'); objFld.select(); objFld.focus(); return false; } return true; } function validEmailText(strEmailText) { var strInvalid = "*?#&^~`'\\[]<>;/:\" "; var bAliasedEmail = false; var strAliasedEmail = ""; var i = 0; var bValid; bValid = true; strEmailText = alltrim(strEmailText); if (isEmpty(strEmailText)) return true; var strEmail = new String(strEmailText); // Assumption: if strEmail contains < and >, Email is between < and > if (strEmail.indexOf('<') < strEmail.indexOf('>') && strEmail.indexOf('<') >= 0) { bAliasedEmail = true; strAliasedEmail = strEmail; strEmail = strEmail.substring(strEmail.indexOf('<')+1,strEmail.indexOf('>')); } if (strEmail.length < 5) // check the length bValid = false; else if (strEmail.lastIndexOf("@") <= 0 || (strEmail.lastIndexOf(".") - strEmail.lastIndexOf("@") <= 1)) // check positions of @ and . bValid = false; else if (occurs('@', strEmail) > 1) // check if @ occurs more than once bValid = false else if (strEmail.lastIndexOf(".") == (strEmail.length - 1)) // check to make sure email doesnt end in period bValid = false; else // check if any invalid characters present { for (i = 0; i < strEmail.length; i++) if (strInvalid.indexOf(strEmail.charAt(i)) >= 0) { bValid = false; break; } } if (!bValid) { return bValid; } if (bAliasedEmail) this.value = strAliasedEmail; else this.value = strEmail; return bValid; } // This one doesn't accept aliases, but it does check for a valid extension. function validEmailTextAlt(strEmailText) { return (strEmailText.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.(com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk)(\:[0-9]+)*(\/($|[a-zA-Z0-9\.\,\;\?\'\\\+&%\$#\=~_\-]+))*$/) != -1); }
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