How can I run my console JS codes everytime?

Question

My college online education website has a dark mode but my choice is not memorized. And they hadn't changed that since it started. I can change that via Chrome console by themebase.replace("light", "dark") but I want it run when I started the website every time.

I tried to create a file named yildiz.html

 <script> window.location.href="https://online.yildiz.edu.tr/"; alert("test"); themebase.replace("light", "dark"); </script>

As you can imagine, the rest of the code doesn't run when href changes.

Thank you

Answer 1

You can use Tampermonkey to run your script continuously. Otherwise, your code will not work if you change the URL or refresh it. Install the extension and create a new script. Change @match as follows to match your URL and all of its pages -

// @match        https://online.yildiz.edu.tr/*

Now write your script where you are told to write your own code.