loadJQueryStar

loadJQuery.js

(function(){
    if(!window.brainfucktapeAlertStyleLoaded){
        var dcd = document.createElement('style');
        dcd.innerHTML = ".dh-alert{z-index:999;box-shadow:0 0 32px rgba(0,0,0,.6),0 0 260px"+
        " #000;font-size:110%;position:fixed;left:40px;right:40px;top:40%;height:auto;padding:"+
        "16px;background-color:#fff;text-align:center}.dh-alert-close{font-size:80%;color:#bbb;"+
        "font-weight:700;cursor:pointer;margin:2px}.dh-alert-close:hover{color:#888}"+
        ".dh-alert-bg{background-color:rgba(0,0,0,.1);position:fixed;top:0;right:0;bottom:0;left:0;z-index:998}";
        document.body.appendChild(dcd);
        window.brainfucktapeAlertStyleLoaded = true;
    }
    var alert = function(ale){
        var dI = document.createElement('div');
        dI.className = "dh-alert";
        dI.textContent = ale;
        var clo = document.createElement('div');
        clo.className = "dh-alert-close";
        clo.innerHTML = "Close";
        dI.appendChild(clo);
        document.body.appendChild(dI);
        var dB = document.createElement('div');
        dB.className = "dh-alert-bg";
        document.body.appendChild(dB);
        clo.addEventListener('click', function(){
            dI.remove();
            dB.remove();
        });
    };
    if(window.jQuery){
       alert("JQuery alerady loaded.");
       return;
    }
    var script = document.createElement("script");
    script.src = "https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js";
    document.head.appendChild(script);
    script.onload = function(){
        alert("JQuery loaded.");
    }
    if(window.location == "about:blank"){
        document.title = "jsBin - use F12 to play";
    }
})();