CODEWITHSUNDEEP
javascriptjsonvue.jsvuejs2
JonYork
JonYork

Reputation: 1243

how to update specific value in json array

New to manipulating JSON, I appreciate the help! This project uses VueJs 2 if that makes a difference.

I am trying to update a key value, in this example it is "group" for a specific applicant identified by the ID.

I am trying to accomplish something along of lines of:

WHERE applicantID = 3 SET group = 4

This is a sample of the JSON I am dealing with:

{
    "applicantID" : 3,
    "fullName": "name",
    "value1": 30,
    "value1": 31,
    "value1": 40,
    "value1": 41,
    "value1": "50",
    "value1": "51",
    "group": 0,
    "flag": true,
},
{
    "applicantID" : 4,
    "fullName": "name",
    "value1": 30,
    "value1": 31,
    "value1": 40,
    "value1": 41,
    "value1": "50",
    "value1": "51",
    "group": 0,
    "flag": false,
}

Upvotes: 1

Views: 18093

Answers (3)

Isaac Sichangi
Isaac Sichangi

Reputation: 75

You can update a specific value in a JSON array by first getting the specific index then accessing the object property name to edit the value as illustrated below


let users = [{name:"John", DOB:"1991", gender:"male"}, {name:"mary", DOB:"1993", gender:"female"}];

//change DOB of Mary
users[1].DOB = "1995";

NB You can also loop over the JSON array to update a value at a specific index using the same logic.

Upvotes: 0

Zadiki Hassan Ochola
Zadiki Hassan Ochola

Reputation: 778

if you have to compare multiple fields you can use this .as an adjustment onto Sergii's answer

var item = array.find(x => {
      return x.applicantID == 3 && x.fullName == "name" ;
     });
   if (item) {
     item.group = 4;
    }

Upvotes: 1

Sergii Rudenko
Sergii Rudenko

Reputation: 2684

You can do it like this:

var item = array.find(x => x.applicantID == 3);
if (item) {
  item.group = 4;
}

It will change a value of the group in the original array.

Upvotes: 8

Related Questions