Implementing a translucent overlay onto a specific HTML section using sidebar.js/jQuery

Searching for a way to enhance the functionality of my website using Sidebar.js, I came across an interesting feature on hypebeast.com. When you click on the three-bar icon, the main container section's opacity changes. How can I achieve this effect?

I am considering adding an overlay div and toggling its visibility with jQuery. Alternatively, I wonder if it's possible to integrate a function into the sidebar.js script to handle this behavior.

While my preference is to control the opacity through CSS, I am open to implementing it in JavaScript if necessary.

Any suggestions or guidance would be greatly appreciated!

Here is a snippet of my HTML code:

<div class="wrapper jsc-sidebar-content jsc-sidebar-pulled">
        <nav>
            <a href="#" class="fa fa-bars jsc-sidebar-trigger"></a>
        </nav>
        <section>
            <!--content with opacity on clicking above nav-->           
        </section>
    </div>
    <nav class="sidebar jsc-sidebar" id="jsi-nav">
        <!-- nav bar content -->
    </nav>  
    

And here are the scripts for the sidebar js and jQuery:

<script src="js/lib/jquery.min.js"></script>
<script src="js/sidebar.js"></script>
<script>
    $('#jsi-nav').sidebar({
        trigger: '.jsc-sidebar-trigger',
        scrollbarDisplay: true,
        pullCb: function () { console.log('pull'); },
        pushCb: function () { console.log('push'); }
    });

    $('#api-pull').on('click', function (e) {
        e.preventDefault();
        $('#jsi-nav').data('sidebar').push();
    });
    $('#api-push').on('click', function (e) {
        e.preventDefault();
        $('#jsi-nav').data('sidebar').pull();
    });

</script>
    

Answer №1

example - http://jsfiddle.net/victor_007/79sb2rq9/

apply and delete classes to the container with a pseudo element overlay

.container.overlay {
    position:relative;
}
.container.overlay:before {
    content:'';
    background:black;
    opacity:.5;
    position:absolute;
    top:0;
    left:0;
    bottom:0;
    right:0;
    z-index:1;
}

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