Prevent jQuery.getScript adding ?_=timestamp

Question

How to prevent jQuery.getScript from adding ?_=timestamp on URLs?

error log

Source code:

$.getScript('/js/ace/ace.js',function(res) {
   // do something
});

Vikrant · Answer 1 · 2016-09-14T11:44:37.507

This seems to be related to $.getScript('/js/ace/ace.js',function...) calls.

You can consider adding the following snippet as high up as possible:

$.ajaxSetup({
    cache: true
});

Putting the cache: true in your $.ajax() doesn't affect $.getScript('/js/ace/ace.js',function...)
in any way and that's what visible in that screenshot.

Another way, as described at jQueryByExample:

(1) before making call to $.getScript method, you can set the cache true for ajax request and set it to false once script is loaded.

//Code Starts
//Set Cache to true.
$.ajaxSetup({ cache: true });
$.getScript(urlhere, function(){
    //call the function here....
    //Set cache to false.
    $.ajaxSetup({ cache: false });
});
//Code Ends

(2) All you need to do is to add a boolean parameter, which will set the cache attribute to true or false. That's the beauty of jQuery that you can redefine things the way you need.

//Code Starts
$.getScript = function(url, callback, cache){
$.ajax({
    type: "GET",
    url: url,
    success: callback,
    dataType: "script",
    cache: cache
    });
};

So,now you call the $.getScript like, (notice the 3rd argument)

//Code Starts
$.getScript('js/jsPlugin.js',function(){
   Demo(); //This function is placed in jsPlugin.js
}, true);
//Code Ends

ah wait, it works, previously I misread the `$.ajaxSetup` as `$.ajax` — Kokizzu, Mar 09 '15 at 07:05
Plagiarism: copied without attribution from http://www.jquerybyexample.net/2012/04/use-jquerygetscript-to-load-external-js.html — Pekka, Sep 01 '16 at 05:26
@Pekka웃, answered this long back, when was not aware of proper practice. Edited post.. mark words, it was not intentional! thanks for notifying. — Vikrant, Sep 01 '16 at 06:48

score 5 · Accepted Answer · answered Sep 02 '16 at 16:51

I made another aprouch using promises, based on previous responses, think that's more interesting.

window.loadScripts = (scripts) =>  {
    return scripts.reduce((currentPromise, scriptUrl) => {
        return currentPromise.then(() => {
            return new Promise((resolve, reject) => {
                var script = document.createElement('script');
                script.async = true;
                script.src = scriptUrl;
                script.onload = () => resolve();
                document.getElementsByTagName('head')[0].appendChild(script);
            });
        });
    }, Promise.resolve());
};

Let's play

var scripts = [
    "app/resources/scriptDoSomething.js",
    "app/resources/somethingElse.js"
];

loadScripts(scripts).then(() => {
  alert('All scripts were loaded!');
});

score 1 · Answer 3 · edited May 23 '17 at 10:32

Nevermind, I made my own getScript based on Caolan's answer:

H = H || {};

// load a script and run a callback
H.loadScript = function(src, callback) {
    var script = document.createElement('script');
    script.type = 'text/javascript';
    script.src = src;
    script.addEventListener('load', function (e) { H.ExecIfFunction(callback,e); }, false);
    var head = document.getElementsByTagName('head')[0];
    head.appendChild(script);
};

// sources is array, the load process is serial
H.loadScripts = function(sources, callback) {
    var len = sources.length;
    var now = 0;
    var loadOne = function() {
        if(now < len) return H.loadScript(sources[now++],loadOne);
        if(now >= len) H.ExecIfFunction(callback);
    };
    loadOne();
};

Usage example:

H.loadScripts(['/js/ace/ace.js','/js/ace/mode-json.js','/js/jquery-ace.js'],function(){
  // do something
});

Those function doesn't check if any of script loading is unsuccessful.

Prevent jQuery.getScript adding ?_=timestamp

3 Answers3