Pure Pipes Impure Pipes
By default, all pipes are pure. It has to be changed from pure to impure.
Used when angular detects a change in value or parameter. Used in every detection cycle independent of changes in value or parameter.

Note: Our aim while creating Angular 4 Interview Questions, is to help you grow as a Angular Developer. The questions mentioned here have been asked by leading organizations during technical rounds of the interview process.

BY Best Interview Question ON 12 Jun 2020