/TypeScript/Pass function as argument typescript

Pass function as argument typescript

class Foo {
    save(callback: (n: number) => any) : void {
        callback(42);
    }
}
var foo = new Foo();

var strCallback = (result: string) : void => {
    alert(result);
}
var numCallback = (result: number) : void => {
    alert(result.toString());
}

foo.save(strCallback); // not OK
foo.save(numCallback); // OK

Source: stackoverflow.com

Typescript function as parameter

function createPerson(name: string, doAction: () => void): void {
  console.log(`Hi, my name is ${name}.`);
  doAction(); // doAction as a function parameter.
}

// Hi, my name is Bob.
// performs doAction which is waveHands function.
createPerson('Bob', waveHands());

Similar codes

0 vote150 views1 answer
Tuple must contain two elements unity
TypeScript
1 vote186 views1 answer
Useappselector
TypeScript
0 vote145 views1 answer
Date get date dots
TypeScript
1 vote127 views1 answer
React setstate in hooks to array of objects value
TypeScript
2 votes136 views1 answer
How to call angular 8 form validation ngif
TypeScript
3 votes273 views2 answers
Array of objects how to check if property has duplicate
TypeScript
6 votes147 views4 answers
Angular get url params
TypeScript
0 vote142 views1 answer
How to check if key exists in json object c#
TypeScript
0 vote138 views1 answer
Number validation in typescript
TypeScript
0 vote146 views1 answer
Test if parameter supports null reflection
TypeScript