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JavaScript JavaScript and the DOM (Retiring) Making Changes to the DOM Styling Elements

Fuad Muhammad
Fuad Muhammad
4,273 Points
Posted by Fuad Muhammad
Fuad Muhammad
4,273 Points

Why we must use querySelector?

This question appear because I confused, why we use querySelector? And why not just use getElementById or getElementByClassName direct the DOM. Is there a specific function of the querySelector and getElementById/ClassName?

And if querySelector must be followed, why we must use this? And when it is appropriate for use this?

1 Answer

Alexander Davison
Alexander Davison
65,469 Points

It isn't required. You can use document.getElementById() or document.getElementsByTagName() or whatever. Some people just stick to document.querySelector() as a convention. Personally I don't like this convention, but Guil seems to like it, so that's why he's sticking to querySelector().

Some people have different styles then others.

Fuad Muhammad
Fuad Muhammad
4,273 Points
Fuad Muhammad
Fuad Muhammad
4,273 Points

Yeah, I think so. But this little bit confusing me, because on the other teacher I find different methods what they used. So, this point, it's about behaviour. Right?