javascript - jQuery cannot be accessed properly after being loaded dynamically? -


i trying write small check test jquery, , if not present, dynamically load copy script can run it. sets no conflict in case else present uses $, , runs script - small menu.

however, upon testing jquery loaded script, fails execute: "jquery not defined."

i know jquery has come first before functions use it, there way fix when dynamically installed?

(function() {     console.log("loaded");    if(!window.jquery) {        var script = document.createelement('script');        script.type = "text/javascript";        script.src = "https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js";        document.getelementsbytagname('head')[0].appendchild(script);        jquery.noconflict();     } })();

you're not waiting until script has loaded.

 script.onload = function(){      // whatever  };

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