How to remove this DATA 64 URL and leave normal file url

Question

When I do upload of an image, it adds a sequence of letters, numbers and characters to the URL. I’d like to know how to change this, like, instead of this many characters, just pop up the image link.

Below is the Javascript code I’m using:

$(document).on('change', '#image-upload', function(evt) {
    var files = evt.target.files; // FileList object

    // Loop through the FileList and render image files as thumbnails.
    for (var i = 0, f; f = files[i]; i++) {

        // Only process image files.
        if (!f.type.match('image.*')) {
            continue;
        }

        var reader = new FileReader();

        // Closure to capture the file information.
        reader.onload = (function(theFile) {
            return function(e) {
                // Render thumbnail.
                var span = document.createElement('span');
                span.innerHTML =
                        '<a href="javascript:;" class="add-image"><img width="100px" height="100px" class="image-thumb" src="' + e.target.result + '" title="' + escape(theFile.name) + '"/></a>'
                        ;
                $("#memes-custom").append(span);
            };
        })(f);

        // Read in the image file as a data URL.
        reader.readAsDataURL(f);
    }
});