How to prevent from form submission on Enter

I need to prevent from form submission on pressing Enter key. I have added used following code snippets.

$('.form-submit-css').on("submit", function(e) {
 if (e.keyCode == 13) { 
 e.preventDefault(); 
 return false; 
 } 
 }); 

Or you can add following code.

$('myform').submit(function() {
  return false;
});

Or this snippet.

$('form').keyup(function(e) {
  return e.which !== 13  
});

Or this html.

<form onsubmit="return false;">

Should work for you. Have a fun with your coding !