javascript - Submit the form only if email is valid -

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i need way submit form if email valid. if email not valid show alert ( below can see code ).

javascript:

 function validateemail(email) {      var re = /^(([^<>()[\]\\.,;:\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,}))$/;     return re.test(email);  }     function continueornot() {     if(validateemail(document.getelementbyid('emailfield').value)){     // ok     }else{ alert("email not valid"); return false;}  }

html:

<form method="post" action="register.php" enctype="multipart/form-data"> <table> <tr><td>email:</td></tr> <tr><td><input type="text" size="30" name="email" id="emailfield"> </td></tr> <tr><td>password:</td></tr> <tr><td><input type="password" size="30" name="password"> </td></tr> </table> <input name="steptwo" value="create account" type="submit" onclick="continueornot();"/> </form>

the problem form submitted if email not valid.

how can resolve problem ?

you should attach return continueornot(); onsubmit event of form, not button's click event.

see fiddle: http://jsfiddle.net/ndsmu/


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