jQuery: Load external scripts and cache them.

ajax-cache-include.js

/**
 * Cache AJAX-included scripts.
 */
$.cachedScript = function (url, options) {
    options = $.extend(
        options || {}, {
            dataType: "script",
            cache: true,
            url: url
        }
    );

    return $.ajax(options);
};

/* ------------------- */

// Usage.

var myScript = siteUrl +"/js/my-script.js";

$.cachedScript(myScript).done(
    function (script, textStatus) {
        console.log(myScript +": "+ textStatus);
    }
);

/* <> */