JSFiddle - React, Tailwind, and code Playground

by Nick Hulea

JavaScript

var dude, output;
var cache = [];

function convertImgToBase64(url, callback, outputFormat) {
    var canvas = document.createElement('CANVAS');
    var ctx = canvas.getContext('2d');
    var img = new Image();
    img.crossOrigin = 'Anonymous';
    img.onload = function () {
        canvas.height = img.height;
        canvas.width = img.width;
        ctx.drawImage(img, 0, 0);
        var dataURL = canvas.toDataURL(outputFormat || 'image/png');
        dude = dataURL;
        callback.call(this, dataURL);
        canvas = null;
    };
    img.src = url;
}

function convertImages(urlList) {
    var promiseList = [];

    promiseList = urlList.map(function (url) {
        var dfd = new $.Deferred();

        convertImgToBase64(url, function (img) {
            dfd.resolve(img);
        });

        return dfd.promise();
    });

    return $.when.apply(this, promiseList);
}

convertImages(['http://i.imgur.com/mGNwiMq.jpg', 'http://i.imgur.com/JiuXeWe.jpg']).done(function () {
    //console.log('done!', arguments);
    cache.push({
        source: arguments
    });
    function doSomething(cache) {
    
    }
});

//console.log(cache);