typescript optional parameters
// Optional Parameters
sayHello(hello?: string) {
console.log(hello);
}
sayHello(); // Prints 'undefined'
sayHello('world'); // Prints 'world'typescript optional parameters
// Optional Parameters
sayHello(hello?: string) {
console.log(hello);
}
sayHello(); // Prints 'undefined'
sayHello('world'); // Prints 'world'typescript optional parameters
// Default Parameters
sayHello(hello: string = 'hello') {
console.log(hello);
}
sayHello(); // Prints 'hello'
sayHello('world'); // Prints 'world'how to define optional parameter in typescript
function functionName(par1: number, par2?: number) {
}how to make a parameter optional in typescript
// Optional parameter
function foo(x?: number) {
console.log("x : "+ x);
}
foo();
foo(6);Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
