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());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); // OKCopyright © 2021 Codeinu
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