typescript funcion code example

Example 1: typescript function

// Parameter type annotation
function greet(name: string): string {
 return name.toUpperCase();
}

console.log(greet("hello"));		// HELLO
console.log(greet(1));				// error, name is typed (string)

Example 2: typescript function

// Named function
function add(x: number, y: number): number {
  return x + y;
}

// Anonymous function
let myAdd = function (x: number, y: number): number {
  return x + y;
};

Example 3: simple function in typescript

// Named function

//function with type as number
function add(x: number, y: number): number {
  // return sum of numbers entered as params
  return x + y;
}

// Anonymous function

// variable to call and define function
let myAdd = function (x: number, y: number): number {
  // return sum of numbers entered as params
  return x + y;
};