navigating JSON with variable

Question

So, i'm working with the following data...

var data = {"questions": {"question0": "what?", "question1": "why?", "question2": "where?"}};

and trying to loop through all questions, like so...

for (n = 0; n < 5; n++) {
   var value = "question"+n;
   var tracker = data.questions.value;
   console.log(tracker);
}

the problem is that i'm not sure how to declare value as a variable within tracker. Right now it's just looking for value nested within questions and not the actual output of var value.

Halp.

akuiper · Accepted Answer · 2017-08-17 02:54:22Z

1

You can use bracket [] to wrap a variable as key:

var data = {"questions": {"question0": "what?", "question1": "why?", "question2": "where?"}};

for (n = 0; n < 5; n++) {
   var value = "question"+n;
   var tracker = data.questions[value];
   console.log(tracker);
}

answered Aug 17, 2017 at 2:54

akuiper

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