Any and union type

Any Type

  • Any datatype says TypeScript to ignore type check on the variable.
  • This means that you can store string, boolean and number in the variable.
  • Any can mostly be used in migration project.

Example :

var a : any;
a = 10;
a = true;
a = "Hello World"

Union Type

  • Union Type can be used to define multiple data type to a variable.
  • This is achieved by using pipe separated data type.
  • Below is the example for the same.
var a : number | boolean;
a = 10;
a = true;

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