querySelector

The method querySelector() returns the first Element within the document that matches the specified selector, or group of selectors. If no matches are found, null is returned.

Querys

Symbol	Query
#	id
.	class
<blank>	tag

Example

document.querySelector("#id") // Returns the FIRST element with the ID of id

document.querySelector(".id") // Returns the FIRST element with the className of id

document.querySelector("label") // Returns the FIRST element that is a LABEL