How to know the Jquery library version just by viewing the codes made by other users?

Question

I have a small jquery code here, offered by a member of this site that I ended up finding, and I don’t know which version of the library I should upload and execute someone else’s code. I can’t comment on the response he gave to another user because of my reputation, which library should I add?

$(document).ready(function(){

$("#ckAll").click(function()  {  // minha chk que marcará as outras

if ($("#ckAll").prop("checked"))   // se ela estiver marcada... 

$(".chk").prop("checked", true);  // as que estiverem nessa classe ".chk" tambem serão marcadas
     else $(".chk").prop("checked", false);   // se não, elas tambem serão desmarcadas

}); 

Answer 1

I don’t know if this is the ideal answer, but my tip will always use the most current version! Because theoretically it always corrects and improves the previous versions.

Then after you put the most current version you test to see if it works. If you run ok. If you have an error, you can refer to official documentation if something in the code is like deprecated. If you see in the Console that there is an error, you identify the error, take the method name, and query the documentation here: https://api.jquery.com/category/deprecated/

Another tip is to look at the date of the posting from where you picked up the code and check what the date version was on that list of Releases Dates https://en.wikipedia.org/wiki/JQuery