Increment multiple nested variables in an object in Javascript

Question

I have would like to increment multiple nested variables in an object:

My variable looks like this

var my_var = {
    count1 : 0,
    count2 : 0,
    count3 : 0
}

Currently i'm doing it this way:

my_var.count1 ++;
my_var.count2 ++;
my_var.count3 ++;

Is it a way to do something like this?

myvar : {
    count1++,
    count2++,
    count3++
}

T.J. Crowder · Accepted Answer · 2016-02-15 10:50:22Z

5

Is it a way to do something like this?

No reasonably, no, the way you're doing it is probably your best option.

You could use Object.keys and forEach:

Object.keys(my_var).forEach(function(key) {
    if (key.startsWith("count")) { // Or `if (/^count\d$/.test(key)) {`, or `if (/^count\d+$/.test(key)) {` if they can have multiple digits
        my_var[key]++;
    }
});

...but I'm not saying that's a good idea, unless there are factors not given in the question (a hundred count vars, or a run-time determined number of them, etc.).

edited Feb 15, 2016 at 10:50

answered Feb 15, 2016 at 10:35

T.J. Crowder

1.1m201 gold badges2k silver badges2k bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Increment multiple nested variables in an object in Javascript

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related