hugoDocs/pipeline/js/scripts/images-extend-markdown-with-classes.js

(function imageClasses() {
    // var allImgs = document.getElementsByTagName('img');
    var allImgs = document.querySelectorAll('.body-copy img');
    if (allImgs.length < 1) {
        return;
    } else {
        applyAltClassesAndIds(allImgs);
    }
    function applyAltClassesAndIds(images) {
        for (var i = 0; i < images.length; i++) {
            if (images[i].alt.indexOf('class=') > 0) {
                var justText = images[i].alt.split('class=')[0];
                var newClass = images[i].alt.split('class=')[1];
                images[i].setAttribute('alt', justText);
                images[i].classList.add(newClass);
            } else if (images[i].alt.indexOf('id=') > 0) {
                var justText = images[i].alt.split('id=')[0];
                var newId = images[i].alt.split('id=')[1];
                images[i].setAttribute('alt', justText);
                images[i].id = newId;
            }
        }
    }
})();