add height using jquery add some extra code example

Example 1: add set time out in jquery

$(".submit_wide").click(function () {
    $(this).val('Please wait..');
    $(this).attr('disabled', true);
    setTimeout(function() { 
        $(this).attr('disabled', false);
        $(this).val('Submit');
    }, 2000);
});

Example 2: add new items in a select input using js

$("#mySelect").append('<option value=1>My option</option>');