How to replace value in JSON object in Node.js

Question

I want to replace the value in existing JSON object in Node.js

Code :

var designationName='Softwar Engineer';
console.log(generateData[0]);

Console Output:

{ 
email: '[email protected]',
designation: 10,
id: 274,
first_name: 'firstname',
mobile: '1234567890',
last_name: 'lastname'
}

In the above console output 'designation' value printed as '10'

Expected Result:

I want to replace "designation: Software Engineer" instead of "designation:10"

What has this got to do with JSON? There is no JSON in your example code. — James
– James, Commented Feb 29, 2016 at 9:46

Kunal.Bhatt · Accepted Answer · 2016-02-29 10:07:46Z

3

Considering generateData[0] contains the following json which you fetch from a database

 { 
  email: '[email protected]',
  designation: 10,
  id: 274,
  first_name: 'firstname',
  mobile: '1234567890',
  last_name: 'lastname'
 };

To replace "designation: Software Engineer" instead of "designation:10"

var designationName = 'Software Engineer';
if(generateData[0]){
 generateData[0]['designation']= designationName;
}
console.log(generateData[0]);

answered Feb 29, 2016 at 10:07

Kunal.Bhatt

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Comments

DinhNguyen · Accepted Answer · 2016-02-29 07:20:23Z

1

var designationName='Softwar Engineer';
if( generateData.length && generateData[0].designation)
{
    generateData[0].designation = designationName;
}
console.log(generateData[0]);

answered Feb 29, 2016 at 7:20

DinhNguyen

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6 Comments

siva Over a year ago

Hi DinhNC, Thanks for your answer, but out put was look like in the below. { email: '[email protected]', designation: 10, id: 274, first_name: 'Siva', mobile: '9942235226', last_name: 'Palaniappan' }

siva Over a year ago

Hi DinhNC, Thanks for your answer, but output was look like in the below. as { desigantion:NaN}

DinhNguyen Over a year ago

Can you share your code please! I think your running don't correct. You can see example here: node-console.com/script/code Copy code below for testing: var generateData = [{ email: '[email protected]', designation: 10, id: 274, first_name: 'Siva', mobile: '9942235226', last_name: 'Palaniappan' }]; var designationName='Softwar Engineer'; generateData[0].designation = designationName; console.log(generateData[0]);

DinhNguyen Over a year ago

Code for testing: mediafire.com/download/0xuri1718nfvp5q/ConsoleTest.zip

DinhNguyen Over a year ago

Your output was look like { desigantion:NaN}. Maybe storage structure type in DB don't correct or you try storing String into Number.

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