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How to write script to modify webpage automatically? (JavaScript, CSS, HTML)?
I know I can inspect element and change for example background color. But I wanna write some kind of script which will change background color for me. Anyone know how? Example or link would be nice.
3 Answers
- Anonymous5 years agoFavorite Answer
You can not, your script would need to know the name of the class or id of each area it needed to change. Which will be different on every page.
- ChrisLv 75 years ago
For pure CSS mods you can use Stylish; if you need to run JS code, use GreaseMonkey.
Both extensions should be available for Chrome as well as Firefox.
- cpciiLv 75 years ago
Is this on your own site, or on a site you visit?
If its your site its easy to to, if its a site you visit, you can't unless they have a 'customize' button which is rare (I think myspace used to have it but tahts about it).
More information would be better to be able to answer your question though.
