types function typescript
interface Safer_Easy_Fix {
title: string;
callback: () => void;
}
interface Alternate_Syntax_4_Safer_Easy_Fix {
title: string;
callback(): void;
}types function typescript
interface Safer_Easy_Fix {
title: string;
callback: () => void;
}
interface Alternate_Syntax_4_Safer_Easy_Fix {
title: string;
callback(): void;
}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)typescript function type
// define your parameter's type inside the parenthesis
// define your return type after the parenthesis
function sayHello(name: string): string {
console.log(`Hello, ${name}`!);
}
sayHello('Bob'); // Hello, Bob!types function typescript
interface Easy_Fix_Solution {
title: string;
callback: Function;
}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;
};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;
};Copyright © 2021 Codeinu
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