eMail-Validierung

HTML-Einbindung
<!-- Script-Anfang --> <!-- www-java24.net - DIE Javascript - Ressource --> <!-- Diesen Code musst Du in den -body- einbauen --> <form name="validation" onSubmit="return checkbae()"> Please input a valid email address:<br> <input type="text" size=18 name="emailcheck"> <input type="submit" value="Submit"> </form> <script language="JavaScript1.2"> var invalidaddress=new Array() invalidaddress[0]="hotmail" invalidaddress[1]="rocketmail" invalidaddress[2]="yahoo" invalidaddress[3]="zdnetmail" //extend or shorten this list if neccessary var testresults function checkemail(){ var invalidcheck=0; var str=document.validation.emailcheck.value var filter=/^(\w+(?:\.\w+)*)@((?:\w+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i if (filter.test(str)){ var tempstring=str.split("@") tempstring=tempstring[1].split(".") for (i=0;i<invalidaddress.length;i++){ if (tempstring[0]==invalidaddress[i]) invalidcheck=1 } if (invalidcheck!=1) testresults=true else{ alert("Please input a more official email address!") testresults=false } } else{ alert("Please input a valid email address!") testresults=false } return (testresults) } </script> <script> function checkbae(){ if (document.layers||document.getElementById||document.all) return checkemail() else return true } </script> <!-- Script-Ende --> <!-- www-java24.net - DIE Javascript - Ressource -->