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JavaScript Node.js Basics 2017 Building a Command Line Application Parsing JSON

Posted by ada ada
.a{fill-rule:evenodd;}techdegree
ada ada
Front End Web Development Techdegree Student 192 Points

How to access first element of JSON object array?

How to access first element of JSON object array?

{"symbols_requested":3,"symbols_returned":3,"data":[{"symbol":"AAPL","name":"Apple}]

I want to access name

Steven Parker

1 Answer

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

:bell: Hi, I got alerted by your tag; but there's a lot of students (and occasionally instructors!) willing to help — next time try giving the whole community at least a day to answer and you can always tag someone(s) later.

This code appears to be a JavaScript object literal. It's JSON-compatible, but it's not in JSON format now. It also seems to have two errors:

  • a quote mark is missing after "Apple"
  • and closing is brace is missing at the very end

So if we fix those and format it to make it easier to read:

{"symbols_requested": 3,
  "symbols_returned": 3,
  "data": [ {"symbol": "AAPL",
             "name": "Apple"} ]
}

We can see that "name" is a property of an object that is inside the first element of an array named "data", which is itself inside the main object. So for example, if this object were being reference by a variable named "test", you could access the name as:

test.data[0].name