aepnat / simpuskesmas

    function previewImage(file) {

        var galleryId = "gallery";

        var gallery = document.getElementById(galleryId);

        var imageType = /image.*/;

        if (!file.type.match(imageType)) {

            throw "File Type must be an image";

        }

        var thumb = document.createElement("div");

        thumb.classList.add('thumbnail');

        var img = document.createElement("img");

        img.file = file;

        thumb.appendChild(img);

        gallery.appendChild(thumb);

        // Using FileReader to display the image content

        var reader = new FileReader();

        reader.onload = (function(aImg) { return function(e) { aImg.src = e.target.result; }; })(img);

        reader.readAsDataURL(file);

    }

})();