Bootstrap Snippet using HTML CSS Javascript

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<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
    <div class="row">
        <div class="col-12">
            <div class="compare-box"> 
                <img id="newPic" src="https://love-img.com/wp-content/uploads/2017/11/3504.jpg"  class="new-pic img-fluid">  
                <img src="https://gfx4arab.com/wp-content/uploads/2017/10/Ryad.jpg" class="old-pic img-fluid">  
            </div> 
        </div>
    </div>
</div>
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/*
        Comparing ... 
    */
    .compare-box{
        position: relative;
        width: 900px;
        height: 600px;
        overflow: hidden;
    } 
    
    .new-pic{
        position: absolute;
        left: 0;
        top: 0;
        z-index: -1;
        opacity: 0;
    }
    .img-magnifier-glass {  
        border: 3px solid  #fff; 
        width: 300px; 
        height: 300px; 
        padding: 0; 
        margin: 0;  
        top: 0;
        left: 0;
        overflow: hidden;
        cursor: move; 
        position: absolute;
        z-index: 3;
        resize: both
    } 
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            function magnify(imgID, zoom) {
                var img, glass, w, h, bw;
                img = document.getElementById(imgID);
                /* Create magnifier glass: */
                glass = document.createElement("DIV");
                glass.setAttribute("class", "img-magnifier-glass");
                /* Insert magnifier glass: */
                img.parentElement.insertBefore(glass, img);
                /* Set background properties for the magnifier glass: */
                glass.style.backgroundImage = "url('" + img.src + "')";
                glass.style.backgroundRepeat = "no-repeat";
                glass.style.backgroundSize = (img.width * zoom) + "px " + (img.height * zoom) + "px";
                bw = 3;
                w = glass.offsetWidth / 2;
                h = glass.offsetHeight / 2;
                /* Execute a function when someone moves the magnifier glass over the image: */
                glass.addEventListener("mousemove", moveMagnifier);
                img.addEventListener("mousemove", moveMagnifier);
 
                    
                /*and also for touch screens:*/
                glass.addEventListener("touchmove", moveMagnifier);
                img.addEventListener("touchmove", moveMagnifier);
                function moveMagnifier(e) {
                    var pos, x, y;
                    /* Prevent any other actions that may occur when moving over the image */
                    e.preventDefault();
                    /* Get the cursor's x and y positions: */
                    pos = getCursorPos(e);
                    x = pos.x;
                    y = pos.y;
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"Untitled"
Bootstrap 4.1.1 Snippet by krunb

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"Untitled" Bootstrap 4.1.1 Snippet by krunb

Related: See More

Questions / Comments:

"Untitled"
Bootstrap 4.1.1 Snippet by krunb