how to keep the value of a variable outside method in JS?

Question

I have this problem, when I change the value of a variable inside my function if i want to use it outside of it, the vaalue of the variable returns to 0, but inside of it, the value it's changed.

I need to know a way to keep the value of the variable outside the function.

Here is my current code:

function getCarsWithNoStatus() {
   var statusName = [];
 // We set the total counters for the areas
   var totals = {bodyshop: 0, paintshop: 0, assembly: 0};
 // var tmpTotal = 0;


        WebApiFactory.getNoStatusOrders(bodyShop1).then(function(statusMonData) {
            for(var statusProperty in statusMonData.NoStatusOrders) {
                statusName = statusProperty;
                for (var j = 0; j < statusMonData.NoStatusOrders[statusName].length; j++) {
                    if (typeof statusMonData.NoStatusOrders[statusProperty][j] !== null) {
                        totals.bodyshop++;
                        console.log(totals.bodyshop); //here shows correct value
                    }
                }
            }
        });
        console.log(totals.bodyshop); //value returns to 0

  }

the problem is that your console.log(totals.bodyshop); that is outside, gets executed before the promise is returned.. — CodeHacker, Sep 18 '17 at 13:58
Which console.log prints first? Is WebApiFactory.getNoStatusOrders(bodyShop1) an ajax call? — Amit Kumar Singh, Sep 18 '17 at 13:59
@Amit you're right it's an ajax call and the second console.log is the one that gets printed first — Mauricio Andrés, Sep 18 '17 at 14:21

score 0 · Answer 1 · answered Sep 18 '17 at 14:00

0

The value of totals is being modified in an asynchronous code, so your console.log is being executed before the asynchronous code is finished. When working with such code you usually want to return a Promise or execute a callback after the async code is finished executing.

answered Sep 18 '17 at 14:00

shawon191

1,945
13
28

How do I execute a callback? for this case? – Mauricio Andrés Sep 18 '17 at 14:22

how to keep the value of a variable outside method in JS?

1 Answers1