Javascript Function not executing/returning value

Question

I have a function and I want to see what the value of index is. It gives me 0 however. I thought that was wierd so I put a console.log in function() to see if it was executing or not and I didn't recieve an output which tells me that function() isn't getting called. Not sure what I'm doing wrong.

function jsTest() {

    var index = 0;
    var counter = 0;
    var obj = {};
    obj.index = index; //obj.index = 0 at this point

    var func = function () {

        for (index = 0; index < 10; index++) {
            counter += 2;
            console.log(counter); //Doesn't execute for some reason
        }
        obj.index++;
    };

    obj.func = func; //executes function()
    this.index++;
    return index;
}

var x = jsTest();
console.log(x);

StephenTG · Accepted Answer · 2015-08-10 19:06:31Z

3

obj.func = func;

doesn't actually call func, it assigns the property func for obj to be the function func. If you want to call func, you should add parentheses afterwards, like

obj.func = func();

answered Aug 10, 2015 at 19:06

StephenTG

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2 Comments

Snorlax Over a year ago

Gotcha, so would it be safe to assume that from this that "return index" is returning a value of 0 since function() isn't being called

StephenTG Over a year ago

The function certainly isn't being called, and that would prevent index from being incremented. You've got a couple of different indexes floating around, though, so if this doesn't fix your problem I'd make sure you're returning and incrementing the right one

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