Undefined and Null in *NgIf

Question

Are null, undefined and ""<empty string> value treated similarly by *Ngif? For example, is this: *ngIf = "foo == null"

Treated the same as: *ngIf = "foo == undefined"

If not, is there a simpler way to use *ngIf to not show properties with the value null, undefined, and ""?

Answer 1

You can solve this also by using

null === undefined // false
null == undefined // true

by the use of strict comparison operator

Answer 2

You can simply check *ngIf = "foo" that can check undefined and null or empty.