Question

I have a set of global counter variables in Javascript:

var counter_0 = 0; var counter_1 = 0; var counter_2 = 0; 

etc

I then have a Javascript function that accepts an ‘index’ number that maps to those global counters. Inside this function, I need to read and write to those global counters using the ‘index’ value passed to the function.

Example of how I’d like it to work, but of course doesn’t work at all:

function process(index) {     // do some processing      // if 'index' == 0, then this would be incrementing the counter_0 global variable     ++counter_+index;       if (counter_+index == 13)     {         // do other stuff     } } 

I hope what I’m trying to accomplish is clear. If not I’ll try to clarify. Thanks.

EDIT Clarification:

I’m not trying to increment the name of the counter, but rather the value the counter contains.

Answer 1

Looks like an array to me, or am I missing something?

var counters = [0,0,0];  function process(index) {    ++counters[index];        /* or ++counters[index]+index, not sure what you want to do */    if (counters[index] === 13) {        /* do stuff */     } }