How to read data from a json file using node.js

Question

I need to read my user Id to know what the timestart number is but I don't find the way to read the data.

//My code
const fs = require('fs');
var timePath = 'test.json'
var TimeRead = fs.readFileSync(timePath);
var timeFile = JSON.parse(TimeRead); //ready for use
var userId = "2"

var Time = TimeRead.userId.TimeStart; 

console.log(Time)

1 is my user Id variable

//My json File
{
  "1": {
    "TimeStart": 1626909816680
  },
  "2": {
    "TimeStart": 1627166305644
  }
}

Please say what the problem is. If the code you posted does not work, show the error or explain what is wrong. — Codebling
– Codebling, Commented Jul 26, 2021 at 15:36
your ignoring timeFile after decode, use that instead, timeFile[userId].TimeStart — Lawrence Cherone
– Lawrence Cherone, Commented Jul 26, 2021 at 15:36
Test question: Why do you assume that in TimeRead.userId.TimeStart the userId refers to 2 while assuming at the same time that TimeStart refers to "TimeStart"? — Tomalak
– Tomalak, Commented Jul 26, 2021 at 15:36

Codebling · Accepted Answer · 2021-07-26 15:37:19Z

1

var Time = TimeRead.userId.TimeStart;

You can't use a variable with .

Try this:

var Time = TimeRead[userId].TimeStart;

answered Jul 26, 2021 at 15:37

Codebling

11.5k3 gold badges45 silver badges71 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to read data from a json file using node.js

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related