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. Getting started with localStorage vs sessionStorage in html5
2. Array filterUntil function implementation for javascript
3. Error handling in promises interview question
4. Getting the parameters and arguments of a javascript function
5. css specificity interview question