Include jQuery in the JavaScript Console
JavascriptJqueryJavascript Problem Overview
Is there an easy way to include jQuery in the Chrome JavaScript console for sites that do not use it? For example, on a website I would like to get the number of rows in a table. I know this is really easy with jQuery.
$('element').length;
The site does not use jQuery. Can I add it in from the command line?
Javascript Solutions
Solution 1 - Javascript
Run this in your browser's JavaScript console, then jQuery should be available...
var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);
// ... give time for script to load, then type (or see below for non wait option)
jQuery.noConflict();
NOTE: if the site has scripts that conflict with jQuery (other libs, etc.) you could still run into problems.
Update:
Making the best better, creating a Bookmark makes it really convenient, let's do it, and a little feedback is great too:
- Right click the Bookmarks Bar, and click Add Page
- Name it as you like, e.g. Inject jQuery, and use the following line for URL:
> javascript:(function(e,s){e.src=s;e.onload=function(){jQuery.noConflict();console.log('jQuery injected')};document.head.appendChild(e);})(document.createElement('script'),'//code.jquery.com/jquery-latest.min.js')
Below is the formatted code:
javascript: (function(e, s) {
e.src = s;
e.onload = function() {
jQuery.noConflict();
console.log('jQuery injected');
};
document.head.appendChild(e);
})(document.createElement('script'), '//code.jquery.com/jquery-latest.min.js')
Here the official jQuery CDN URL is used, feel free to use your own CDN/version.
Solution 2 - Javascript
Run this in your console
var script = document.createElement('script');script.src = "https://code.jquery.com/jquery-3.4.1.min.js";document.getElementsByTagName('head')[0].appendChild(script);
It creates a new script tag, fills it with jQuery and appends to the head.
Solution 3 - Javascript
Copy everything from:
https://code.jquery.com/jquery-3.4.1.min.js
And paste it into console. Works perfectly.
Solution 4 - Javascript
Use the jQueryify booklet:
https://web.archive.org/web/20190502132317/http://marklets.com/jQuerify.aspx
Instead of copy pasting the code in the other answers, this'll make it a clickable bookmark.
Solution 5 - Javascript
Adding to @jondavidjohn's answer, we can also set it as a bookmark with URL as the javascript code.
Name: Include Jquery
Url:
javascript:var jq = document.createElement('script');jq.src = "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js";document.getElementsByTagName('head')[0].appendChild(jq); setTimeout(function() {jQuery.noConflict(); console.log('jQuery loaded'); }, 1000);void(0);
and then add it to the toolbar of Chrome or Firefox so that instead of pasting the script again and again, we can just click on the bookmarklet.
Solution 6 - Javascript
I'm a rebel.
Solution: don't use jQuery. jQuery is a library to abstract the DOM inconcistencies across the browsers. Since you're in your own console, you don't need this kind of abstraction.
For your example:
$$('element').length
($$
is an alias to document.querySelectorAll
in the console.)
For any other example: I'm sure I can find anything. Especially if you're using a modern browser (Chrome, FF, Safari, Opera).
Besides, knowing how the DOM works wouldn't hurt anyone, it would only increase your level of jQuery (yes, learning more about javascript makes you better at jQuery).
Solution 7 - Javascript
Post 2020 method, using:
(async () => {
await import('https://code.jquery.com/jquery-2.2.4.min.js')
// Library ready
console.log(jQuery)
})()
Without async, import returns a Promise, we have to use .then()
:
import('https://code.jquery.com/jquery-2.2.4.min.js')
.then( () => {
console.log(jQuery)
}
)
Solution 8 - Javascript
I just made a jQuery 3.2.1 bookmarklet with error-handling (only load if not already loaded, detect version if already loaded, error message if error while loading). Tested in Chrome 27. There is no reason to use the "old" jQuery 1.9.1 on Chrome browser since jQuery 2.0 is API-compatible with 1.9.
Just run the following in Chrome's developer console or drag & drop it in your bookmark bar:
javascript:((function(){if(typeof(jQuery)=="undefined"){window.jQuery="loading";var a=document.createElement("script");a.type="text/javascript";a.src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js";a.onload=function(){console.log("jQuery "+jQuery.fn.jquery+" loaded successfully.")};a.onerror=function(){delete jQuery;alert("Error while loading jQuery!")};document.getElementsByTagName("head")[0].appendChild(a)}else{if(typeof(jQuery)=="function"){alert("jQuery ("+jQuery.fn.jquery+") is already loaded!")}else{alert("jQuery is already loading...")}}})())
Solution 9 - Javascript
The top answer, by jondavidjohn is good but I'd like to tweak it to address a couple of points:
- Various browsers issue a warning when loading a script from
http
to a page onhttps
. - Just changing
jquery.com
's protocol tohttps
results in a warning if you try it straight from the browser's URL bar:This is probably not the site you are looking for!
- I like to use Google's CDN when I'm using the console to experiment with Google sites such as Gmail.
My only issue is that I have to include a version number where in the console I really always want the latest.
var jq = document.createElement('script');
jq.src = "//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);
jQuery.noConflict();
Solution 10 - Javascript
Per this answer:
fetch('https://code.jquery.com/jquery-latest.min.js').then(r => r.text()).then(r => eval(r))
For some reason I have to execute it twice to get the new '$' (which I have to do with the other methods as well), but it works.
This is the equivalent if your browser isn't so modern:
fetch('http://code.jquery.com/jquery-latest.min.js').then(function(r){return r.text()}).then(function(r){eval(r)})
Solution 11 - Javascript
It's pretty easy to do this manually, as the other answers explain. But there's also the jQuerify plug-in.
Solution 12 - Javascript
FWIW, Firebug embeds the include
special command, and jquery is aliased by default:
https://getfirebug.com/wiki/index.php/Include
So in your case, you just have to type :
include("jquery");
Florent
Solution 13 - Javascript
this answer based on @genesis answer, at first I tried the bookmark version @jondavidjohn, and it is not working, so I change it to this (add it to your bookmark):
javascript:(function(){var s = document.createElement('script');s.src = "//code.jquery.com/jquery-2.2.4.min.js";document.getElementsByTagName('head')[0].appendChild(s);console.log('jquery loaded')}());
words of caution, is not tested in chrome but work in firefox, and not tested in conflict environment.
Solution 14 - Javascript
Modern browsers (tested on Chrome, Firefox, Safari) implement some helper functions using the dollar sign $
that are very similar to jQuery (if the website doesn't define something using window.$
).
Those utilities are quite useful for selecting elements in the DOM and modifying them.
Solution 15 - Javascript
One of the shortest ways would be just copy pasting the code below to the console.
var jquery = document.createElement('script');
jquery.src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js";
document.head.appendChild(jquery);
Solution 16 - Javascript
If you're looking to do this for a userscript, I wrote this: http://userscripts.org/scripts/show/123588
It'll let you include jQuery, plus UI and any plugins you'd like. I'm using it on a site that has 1.5.1 and no UI; this script gives me 1.7.1 instead, plus UI, and no conflicts in Chrome or FF. I've not tested Opera myself, but others have told me it's worked there for them as well, so this ought to be pretty well a complete cross-browser userscript solution, if that's what you need to do this for.
Solution 17 - Javascript
If you want to use jQuery frequently from the console you can easily write a userscript. First, install Tampermonkey if you are on Chrome and Greasemonkey if you are on Firefox. Write a simple userscript with a use function like this:
var scripts = [];
function use(libname) {
var src;
if (scripts.indexOf(libname) == -1) {
switch (libname.toLowerCase()) {
case "jquery":
src = "//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js";
break;
case "angularjs":
src = "//ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js";
break;
}
} else {
console.log("Library already in use.");
return;
}
if (src) {
scripts.append(libname);
var script = document.createElement("script");
script.src = src;
document.body.appendChild(scr);
} else {
console.log("Invalid Library.");
return;
}
}
Solution 18 - Javascript
Here is alternative code:
javascript:(function() {var url = '//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js'; var n=document.createElement('script');n.setAttribute('language','JavaScript');n.setAttribute('src',url+'?rand='+new Date().getTime());document.body.appendChild(n);})();
which can be pasted either directly in Console or create a new Bookmark page (in Chrome right-click on the Bookmark Bar, Add Page...) and paste this code as URL.
To test if that worked, see below.
Before:
$()
Uncaught TypeError: $ is not a function(…)
After:
$()
[]
Solution 19 - Javascript
Turnkey solution :
Put your code in yourCode_here
function. And prevent HTML without HEAD tag.
(function(head) {
var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js";
((head && head[0]) || document.firstChild).appendChild(jq);
})(document.getElementsByTagName('head'));
function jQueryReady() {
if (window.jQuery) {
jQuery.noConflict();
yourCode_here(jQuery);
} else {
setTimeout(jQueryReady, 100);
}
}
jQueryReady();
function yourCode_here($) {
console.log("OK");
$("body").html("<h1>Hello world !</h1>");
}
Solution 20 - Javascript
intuitive one-liner
document.write(unescape('%3Cscript src="https://code.jquery.com/jquery-3.1.1.min.js"%3E%3C/script%3E’))
You can change the src
address.
I referred to https://stackoverflow.com/questions/9493936/referenceerror-cant-find-variable-jquery#comment12024263_9493985
Solution 21 - Javascript
i have built upon the accepnted solution and made it better
var also_unconflict = typeof $ != "undefined";
var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);
if(also_unconflict){
setTimeout(function(){
$=jQuery.noConflict();
console.log('jquery loaded, use jQuery instead of $')
}, 500)
}else{
console.log('jquery loaded, you can use $');
}
i'm using this function in google chrome console snippet
Solution 22 - Javascript
Another option is just save the jQuery content in a snippet(chrome) and run (Right click+Run or CTRL+Enter) it on which ever site you want. It's not necessarily jQuery any javascript if you want to run it on demand. (for ex: SharePoint JSOM.. just save all JSOM files as snippets and run it in the required order)