I'm just getting started with Angular 2 and TypeScript and I can't seem to figure out how to use callback functions, I know this may be a silly question but given this regular javascript code:
someOnject.doSomething('dsadsaks', function(data){
console.log(data);
});
What is the equivalent in TypeScript?
The same code works in TypeScript. Alternatively you can use
someOnject.doSomething('dsadsaks', data => {
console.log(data);
});
The difference is that in the 2nd version this. would refer to the class surrounding the code.
this will refer to class variable or function variable ??this refers to the class. I'm not dure myself what I referred to with this sentence ;this when used in above callback function will it refer to class or call back function ?Your example is perfectly valid in a TypeScript project. If you wanted you could also strongly type your inputs:
const msg:string = 'dsadsaks'
someOnject.doSomething(msg, data:string =>{
console.log(data);
});
