How do I store response object into a global variable

Question

I want to store the response coming from my socket connection in a global array variable to plot a graph, how can i achieve that

var socket = io('heart sensor api call');
var getValue = function () {
    socket.on('connect', function () {});
    socket.emit('get data', 'hello');
    socket.on('reply', function (data) {
        heart_rate = data;

    });
}

Are you essentially trying to figure out how to return the response from an asynchronous call? — CertainPerformance, May 01 '18 at 00:11
I am trying to store the data coming from an api call into my global array — Nihal Reddy, May 01 '18 at 00:13
Possible duplicate of [How do I return the response from an asynchronous call?](https://stackoverflow.com/questions/14220321/how-do-i-return-the-response-from-an-asynchronous-call) — Mark, May 01 '18 at 00:19
No errors i am getting the data correctly, just want to store them outside the function scope to use for later time — Nihal Reddy, May 01 '18 at 00:32

score 0 · Answer 1 · answered May 01 '18 at 01:22

0

If you are using express. You could create global.heart_rate = ... it will create a global variable accessible from every where. As this is not recommended, I would suggest looking in to app.locals. Hope this helps.

answered May 01 '18 at 01:22

vredrav

21
3

How do I store response object into a global variable

1 Answers1