querySelector vs getElementById

Get Element By Id

• It returns a node list which is live, meaning if you add or remove any element from the DOM the node list will update
• It is faster relative to the query selector methods

Query Selector

• It returns a node list which was available at the time of the execution

Also Read:

1. Using es6 modules with simple examples
2. nodejs: generate uuid / guid
3. position:fixed
4. Getting started with localStorage vs sessionStorage in html5
5. window.onload vs document.onload