Show List
TypeScript interfaces
TypeScript is a superset of JavaScript and allows to add types to data.
There are below common data types in TypeScript:
- boolean
- number
- string
- any - It allows any type of value reassignment.
- void - Used with functions not returning anything.
Type Assignment
Type assignment can be done in two ways:
Explicit
Example: let fName: string = "Bob";
Implicit
Example: let fName = "Bob";
In the implicit assignment TypeScript will guess the type based on the assignment.
TypeScript will throw warning if there is attempt to re-assign to a different data type
let fName: string = "Bob"; // fName is declared as stringfName = 33; // attempt to assign a number will throw warning
Leave a Comment