While this tutorial has content that we believe is of great benefit to our community, we have not yet tested or edited it to ensure you have an error-free learning experience. It's on our list, and we're working on it! You can help us out by using the "report an issue" button at the bottom of the tutorial.
querySelector returns the first element that match the provided CSS query. Use it on the full document:
let myElem = document.querySelector('#myElem');
Or use it on an element to get an element within the element:
let elem = document.querySelector('p'); let myElem = elem.querySelector('#myElem');
querySelector returns all the elements that match the provided selector:
let elems = document.querySelectorAll('p');
And here you can do the same and narrow your selection. Let’s select span elements that are in the first p element:
let firstP = document.querySelector('p'); let spanElems = firstP.querySelectorAll('span');
You can find more data on support for the query selector feature across the major browsers from caniuse.com.