Czy user może edytować JS?

Question

Witam, czy użytkownik strony internetowej może edytować skrypty JS? Chodzi mi o sytuację, gdy mam napisaną np. funkcję

function clicked()
		{
				let xhr = new XMLHttpRequest();
				xhr.onload = function()
				{
					if(this.readyState == 4 && this.status == 200)
					{
						document.querySelector('.output').innerHTML = this.responseText;
					}
				}
				xhr.open('GET', 'suggest.php', true);
				xhr.send();
		}

to czy user może edytować zawartość tej funkcji?

Answer 1

Tak można ingerować w kod js-a, choćby tak.

 

How can I prevent a user from editing my code in their browser?  [ pl ]

 

You literally cannot prevent users from accessing and modifying content that you are sending them. You have no control over the browser, or which browser they use, or whether they are in fact downloading your source code via a browser. You are executing your code on another person's device. You should not and cannot assume anything about the integrity of this device.

 

If you have code that you don't want to have exposed, do not send it to the browser. Instead, let the browser send a request to a server where you execute the secret code.

 

As a concrete example, do not check passwords on the client. The client could be modified to always tell the server “the password was correct”. Instead, authentication must happen on your trusted server.

 

 

P.S.

• How to Inject JavaScript Code to Manipulate Websites Automatically
• How To Edit Any Website Using JavaScript?

Answer 2

Kod JS jest jawny, zatem tak.

Answer 3

tak jak napisal @SzkolnyAdmin  ale chodzi o kod po stronie usera, kod po stronie servera jest poza zasiegiem uzytkownika.