Getting values from multiple JSON objects

Question

I would like to add names to multiple JSON objects at the same time.

I tried this:

let jdata = fs.readFileSync('participants.json');
let json = JSON.parse(jdata);
jury = ["jury1", "jury2"];
for(i=1; i<3; i++){
    data = json.jury[i];
    console.log(data);
}

My JSON file: { "jury1": [ "name1", "name2", "name3" ], "jury2": [ "name1", "name2", "name3" ] } This gives me an error:

            data = json.jurys[i];
                              ^

TypeError: Cannot read property '1' of undefined

I haven't used JSON before and i'm not sure how to get all of the values from these objects. Could someone tell me what i'm doing wrong? Thanks for your time and help already!

Use square brackets like this data = json[jury[i]];

Prakash Sharma
– Prakash Sharma

2017-10-19 10:17:38 +00:00
Commented Oct 19, 2017 at 10:17 — Prakash Sharma
– Prakash Sharma, Commented Oct 19, 2017 at 10:17
I know whats wrong now @gurvinder372 explained it!

Sylent
– Sylent

2017-10-19 10:24:09 +00:00
Commented Oct 19, 2017 at 10:24 — Sylent
– Sylent, Commented Oct 19, 2017 at 10:24

gurvinder372 · Accepted Answer · 2017-10-19 10:23:18Z

3

TypeError: Cannot read property '1' of undefined

Your json doesn't have a jury attribute.

So, json.jury returns undefined and hence your error.

Make it

for(i=0; i<jury.length; i++)
{
    data = json[jury[i]]; //notice the change here
    console.log(data);
}

edited Oct 19, 2017 at 10:23

answered Oct 19, 2017 at 10:18

gurvinder372

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1 Comment

Sylent Over a year ago

Thank you so so much, I edited the loop so it gets both objects, but it works now! Can't thank you enough!

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