Save multiple images on a webpage.

downloadImages.js

function saveFile(url) {
    var filename = url.substring(url.lastIndexOf("/") + 1).split("?")[0];
    var xhr = new XMLHttpRequest();
    xhr.responseType = 'blob';
    xhr.onload = function() {
        var a = document.createElement('a');
        a.href = window.URL.createObjectURL(xhr.response);
        a.download = filename;
        a.style.display = 'none';
        document.body.appendChild(a);
        a.click();
        delete a;
    };
    xhr.open('GET', url);
    xhr.send();
}

// Go through each img tag
$("#container img").each(function() {
    saveFile($(this).attr("src"));
});