Can't call this inside arrow function

Question

I have problem when i'm trying to access by this keyword. I need to access run function inside updateTime

export class PlayerService {

 createPlayer(): void {
            return new window['YT'].Player(this.youtube.playerId, {
                height: this.youtube.playerHeight,
                width: this.youtube.playerWidth,

                events: {
                    'onStateChange': (event) => {

                        function updateTime() {

                   //////I need to access | run function | from here 

                        };

                        this.timeupdater = setInterval(updateTime, 100);


                    }
                }
            });
        }

           run (){

    //some codes 



                }
}

I'm working on ionic 2

Can you update your question to show all the code and the failure? — Matt, Jul 09 '17 at 16:28
@Bergi yes that was the problem , I have no idea about this before ( the problem is I have to use arrow in both ) , but i didnt understand how this is could be duplicated question ? there is nothing related from your marking question :) — programmer, Jul 09 '17 at 16:45
@programmer Of course it is. It explains (all the ways) how to access the `this` value inside a function like `updateTime` that you pass as a callback to something (`setTimeout` in your example), and why it doesn't work with `function`. — Bergi, Jul 09 '17 at 18:49

Günter Zöchbauer · Accepted Answer · 2017-07-09T19:23:09.717

1

You need to go arrow function all the way

function updateTime() {

should be

var updateTime = () => {

or

setInterval(updateTime, 100);

should be

setInterval(() => updateTime(), 100);

edited Jul 09 '17 at 19:23

answered Jul 09 '17 at 16:28

Günter Zöchbauer

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I got syntax error – programmer Jul 09 '17 at 16:32
Please post the exact and full error. – Günter Zöchbauer Jul 09 '17 at 16:32
1

Try my updated answer. – Günter Zöchbauer Jul 09 '17 at 16:33
you are amazing thank you so much . I didnt understand why they marked as duplicate question after 10 second of posting the question . – programmer Jul 09 '17 at 16:43
2

Glad to hear you could make it work. There are already about 5k questions about the same issue, therefore some people lose patience ;-) – Günter Zöchbauer Jul 09 '17 at 16:47
1

"and" should be "or" – Bergi Jul 09 '17 at 18:50

Can't call this inside arrow function

1 Answers1