Question

I have the following code. When the user hits [ENTER] (keycode = 13), the form is being resubmitted. I’d like to prevent a postback in this condition. When I set the keycode equal to 0, it does nothing. The page postback is still occuring. How can I prevent the post postback?

    jQuery(this.Elements.TxtClientId).keypress(function(e) {
        if (e.keyCode == 13) {
            e.keyCode = 0;
            alert("keycode: " + e.keyCode);
            thisTemp._internalClientId = jQuery(thisTemp.Elements.TxtClientId).val();
            jQuery(thisTemp.Elements.DDLClientName).val(jQuery(thisTemp.Elements.TxtClientId).val());
            thisTemp.UpdateTestDropdown();             
        }
    });

Answer 1

Try

 if(e.keyCode === 13){
       e.preventDefault();
       // remainder of your code
   }

per the question:
Prevent a button to submit on enter key