Answers for "how to enable a disabled button in jquery"

jquery add disabled to button

$("#button").attr("disabled", true);

jquery disable button

$('.class').prop("disabled", true);
$('#id').prop("disabled", true);

// As function
const disable = (id) => $(`#${id}`).prop("disabled", true);

jquery remove disabled property from button

$("#edit").click(function(event){
   event.preventDefault();
   $('.inputDisabled').prop("disabled", false); // Element(s) are now enabled.
});