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typescript optional parameters
By 
North Bear
on Jul 21, 2020
North Bear
on Jul 21, 2020
// Optional Parameters
sayHello(hello?: string) {
console.log(hello);
}
sayHello(); // Prints 'undefined'
sayHello('world'); // Prints 'world'Source: medium.com
11
how to define optional parameter in typescript
By Bloody Bear
on May 18, 2021
Bloody Bear
on May 18, 2021
function functionName(par1: number, par2?: number) {
}Source: dotnetpattern.com
1
typescript optional parameters
By North Bear
on Jul 21, 2020
North Bear
on Jul 21, 2020
// Default Parameters
sayHello(hello: string = 'hello') {
console.log(hello);
}
sayHello(); // Prints 'hello'
sayHello('world'); // Prints 'world'Source: medium.com
3
how to make a parameter optional in typescript
By Jenova
on Jan 24, 2021
Jenova
on Jan 24, 2021
// Optional parameter
function foo(x?: number) {
console.log("x : "+ x);
}
foo();
foo(6);1
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