TamperMonkey Tutorial | Add Custom JavaScript to

/ @kajstanski7633
How to change a website with your own code? A beginners lesson about practical Greasemonkey scripts.
In this tutorial, I will show you how to inspect the UA-cam source code to alter it with JavaScript code injected using a Tampermonkey app / plugin / add-on. This method works on both Firefox and Chrome. You can learn from it as a follow along tutorial to then implement your own scripts altering the webpages of your choice. Such Tampermonkey scripts are useful for displaying additional data / information or for autocompletion of forms to speed up your workflows.

[@heyiamuday]

Your explaination is very good & clear
nice script experiment

[@guillermocortes7135]

can you publish the source code?

[@mrjekarpa]

Thanks man - exactly what I needed!

[@kajstanski7633]

Glad to hear it! Let me know if you need any other topic covered. I'm happy to make another video on it.

[@mr_mackey_mvoyez7524]

loved this video man, too bad you stopped posting, would watch more

[@victorzuniga8894]

This script is not working anymore

[@rossli8621]

Just what I was looking for. But a small suggestion: maybe you should try to replace all `var` with `let`. For example, I think in the `run` function, if you just use `var`, console may tell you that `videos` is not defined.

[@RT-.]

`let` has a smaller definition scope than `var`. For example, run this:
console.log(abc); { var abc = 123 }; console.log(abc)
`abc` will print, even though it was defined in a scope that was closed! This applies only in the context of a function, though.
This weird behavior was why let was created - look more into it

[@user-jv2kq2xd5r]

Hello, I need to customize a script that works with the TamperMonkey plugin. The script has the function of clicking on a calendar and going directly to the end of the month.

[@Immortal-pu8gr]

Hi anyway to auto comment on youtube live video, so far I have made the input and automated to click the submit button, but the comment is not being posted.

[@luisbarbosa5597]

very nice, thanks bruh!

[@KrevetkaOo]

does this script still work for you? could you share?

[@rascool5554]

awesome , ty

[@rachidahireche4165]

How we can contact you? Pls need help

[@Mastertradebro07]

Brother i want to talk to you 1v1 how can. I talk ?

[@dominikgameplaytv5903]

Record how to add Tampermonkey Filmot title Restorer script from Restore and Movie and Channel and Playlist

[@MZ-yx8eg]

Nice:)

[@siouaneislem1232]

I wish you keep making userscript videos. and tutorials , and explaine alot more if you can.

[@tonypetruzzi9266]

instead of the hack... you could have just converted the string to a json object.

[@kajstanski7633]

Very good point! Parsing the json makes the code cleaner, but in this case it makes it terribly slow too.

[@user-gv1xu6hu5p]

thank you for sharing the information 🙂🙂how can i create a website script on site ; tls contact fr ??

[@kajstanski7633]

Can you share more background?

[@mohammedalhamadi5143]

Thank you. This is very useful. Is there a way I can support you?

[@mckboard9827]

Is there a method I could contact you. Would be willing to compensate, looking for some help on a project. TY!!

[@kajstanski7633]

Hey, I'm quite short on time lately, but perhaps I can give you some pointers. You can email me, the email address is in the about section on my channel.

[@shine-jf9lg]

Blud i need hacks

[@xd-dy2rf]

lol :/

[@TheBaltLT]

who makes tutorials with distracting talking head? how does this add value to tutorial where focus is of essence??

[@greenwiener]

Like most people on youtube do?

[@FRAN-vd9rl]

how does your comment actually add value to this section by talking such nonsense and trivial aspect instead of focusing in the code?