js queryselector

1var el = document.querySelector(".myclass");
2

1//Pretend there is a <p> with class "example"
2const myParagraph = document.querySelector('.example');
3//You can do many this with is
4myParagraph.textContent = 'This is my new text';

1/*The querySelector() method returns the first element that matches a specified 
2CSS selector(s) in the document. Note: The querySelector() method only returns 
3the first element that matches the specified selectors. To return all the 
4matches, use the querySelectorAll() method instead.*/
5
6// for example 
7
8//for class
9document.querySelector(".ClassName")
10
11// for id 
12document.querySelector("#ID")
13
14// etc.

1let Element = document.querySelector(".class");

1const elt = document.querySelector("#myId p.article > a");
2

1const para = document.querySelectorAll('p');