Append javascript script to head doesnt work

Question

I am trying to append a script tag with a script on the head of a page, but I am appending the code and it doesnt work. Probably because the page is already running.

How can I have something like this work?

$(document).ready(function () {
    $('a').on('click', function () {
        $('head').append('&ltscript&gtconsole.log("running")&lt/script&gt');
    });
});

http://jsfiddle.net/jtjmy5gy/6/

So basically you want to write JS using JS. Why would you do this? You could just define a function and call it when needed. — oshell
– oshell, Commented Jun 2, 2015 at 10:24
@HoschNok I'm building a chrome extension and I need to inject a script dynamically. — gespinha
– gespinha, Commented Jun 2, 2015 at 10:28
@GEspinha Chrome already has functions for this - developer.chrome.com/extensions/tabs#method-executeScript — CodingIntrigue
– CodingIntrigue, Commented Jun 2, 2015 at 10:29

Nishit Maheta · Accepted Answer · 2015-06-02 10:46:51Z

1

Try

DEMO

$(document).ready(function () {
  $('a').on('click', function () {
     $('<script>').text('console.log("running")').appendTo('head');
  });
});

EDIT

call Function using above Example : DEMO

$(document).ready(function () {
   $('a').on('click', function () {
     $('<script>').text('test()').appendTo('head');
   });
});

function test(){
  console.log("running")
}

Edit . you can also append script tag like below : DEMO

$("head").append($("<script />", {
   text: 'test()',
}))

$("head").append($("<script />", {
   html: 'test()',
}))

$("head").append($("<script />", {
   src: url,
}))

edited Jun 2, 2015 at 10:46

answered Jun 2, 2015 at 10:28

Nishit Maheta

6,0413 gold badges19 silver badges32 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

gespinha Over a year ago

What if I have a larger script to add to the head?

Nishit Maheta Over a year ago

you need to write every thing in text(). or you can directly call a function

Nishit Maheta Over a year ago

May i know the reason why you want to code like this . when you can use any function or any logic base on events ??

gespinha Over a year ago

I need this code to run a couple of scripts dynamically through a chrome extension, thanks :)

Community · Accepted Answer · 2017-05-23 12:21:52Z

0

You can put the script into a separate file, then use $.getScript to load and run it.

$.getScript("test.js", function(){
    alert("Running test.js");
});

Source: Rocket Hazmat

How to dynamically insert a <script> tag via jQuery after page load?

edited May 23, 2017 at 12:21

CommunityBot

11 silver badge

answered Jun 2, 2015 at 10:26

George

6,7592 gold badges31 silver badges36 bronze badges

2 Comments

CodingIntrigue Over a year ago

The script in question doesn't have an src, it's just an inline script

gespinha Over a year ago

Yes, I its just an inline script

Collectives™ on Stack Overflow

Append javascript script to head doesnt work

2 Answers 2

4 Comments

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

4 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related