queryselector w3school code example
Example 1: selet all elemnts
var elems = document.body.getElementsByTagName("*");
Example 2: queryselector
var el = document.querySelector(".myclass");
Example 3: javascript queryselector
//Pretend there is a <p> with class "example"
const myParagraph = document.querySelector('.example');
//You can do many this with is
myParagraph.textContent = 'This is my new text';
Example 4: queryselector
document.querySelector(".example");