I'd like to hide the version of jQuery library used in my project so nobody can see which version is in use (at least just by quick looking at the code).

While removing a JS ment containing jQuery version is fairly easy, there is a variable hardcoded into jQuery which reveals the version:

var ah = "1.11.3"

My wish is to empty the variable, however I'm not a frontened developer so I don't know what could potential consequencies.

Does jQuery uses this variable is some particular way?

I'd like to hide the version of jQuery library used in my project so nobody can see which version is in use (at least just by quick looking at the code).

While removing a JS ment containing jQuery version is fairly easy, there is a variable hardcoded into jQuery which reveals the version:

var ah = "1.11.3"

My wish is to empty the variable, however I'm not a frontened developer so I don't know what could potential consequencies.

Does jQuery uses this variable is some particular way?

• javascript
• jquery

• 3 Firstly, you can't. Secondly, why would you even want to? It's pointless. Even without the version number it's easy to spot which version is being used by using feature detection. – Rory McCrossan Commented Feb 14, 2018 at 9:52
• The less they know, the more absurd concepts they e up with regarding “security” ... sigh – C3roe Commented Feb 14, 2018 at 10:00
• How is this related to security in any way? – Horkrine Commented Feb 14, 2018 at 10:14
• This is the requirement I was faced with, please do not change the topic, I'm asking about technical contraindications, not about it is secure or not. – boleslaw.smialy Commented Feb 14, 2018 at 10:40

2 Answers 2

So two points:

1. Yes removing that could have issues, 3rd party plugins will use: jQuery().jquery to get the version to see if the version used is a recent enough version for the plugin to work, if you remove that the plugin could not load or try and work and have massive issues if the version of jquery isn't 'good' enough.

2. Removing the version won't help in people not being able to identify if they really want to, it just adds a 2 minute step to the process of just paring the rest of the code to jquery versions.

I would strongly advise not to remove the version number or change it.

I agree with others point but to answer your question . You can remove the version. you can just empty the version string.

var version = " "

If you give this in your source code even if you try to get the version using $.fn.jquery it gives the empty string.

To give more insight:

1. download the jquery from jquery.
2. save it in the same folder where you create your file.
3. Include the script in your file in the script src tag.
4. go to the downloaded file and empty the version variable( var version = " ")
5. Now in your file even if you try to get the version number ,you cant.

Note : Try to not use the vulnerable version.