Answers for "onclick change active class color"

css onclick change color

<style>
.dabutton:focus {
    background-color:yellow;
}
</style>
<button class="dabutton"></button> // <-- usage

changing the active class on press

$(document).ready(function () {
    $('.nav li a').click(function(e) {

        $('.nav li.active').removeClass('active');

        var $parent = $(this).parent();
        $parent.addClass('active');
        e.preventDefault();
    });
});