TypeScript: Cannot read property 'push' of undefined in [null]

Question

Error: Cannot read property \'push\' of undefined in [null].

class A implements OnInit {
    stringArr: string[];

         


        

Answer 1

For me the syntax was a little more than the accepted answer because I was using a full array type.

stringArr: Array = [];

Also, this would work too

stringArr: String[] = [];

Just 2 ways to type a new array