In typescript, we have to define types for a function definition. It may include type definitions for function parameters and type for the function return value. Simple we can say we have to define a type for inputs and output of the function.
Lets understand it better with the help of an example.
Types for function – TypeScript Examples
Example 1 :
function add(a: number, b:number): number {
return a + b;
}
In the above example we have type number defined for both input variables a & b. Also we have another type number defined as the type for the return value (output of the function.
Example 2:
function print(value: any){
console.log(value);
}
In the above example input value can be of any type. Also there is no return type.
