html form on submit reload code example

Example 1: html prevent submit from reloading page

<form onSubmit="return false; // Returning false stops the page from reloading">
	<button type="submit"></button>
</form>

Example 2: why does my page reloads on form submission

//jquery method //
//preventDefault() prevents the submit button
//from performing its default task like page reload  
  $('#form').submit(function (e) {
      e.preventDefault();
  });