Pushing Objects Inside JSON Array

I need to push a new ID for my data array. If I try pushing into data it creates one more object but not adding into the array for each. Data: [{'devices':{'dID':'TLSM01'},'uuid':

Solution 1:

data is an array containing objects. If you want to add a property to each object you have to iterate over the array.

You need to add a new property to the object devices which is not an array thus you cannot use .push()

var data = [{"devices":{"dID":"TLSM01"},"uuid":"e863c776-f939-4761-bbce-bf0501b42ef7"},{"devices":{"dID":"TLSM01"},"uuid":"5a0cd70d-891d-48d8-b205-e92e828ac445"}];

data.forEach(d=>d.devices['EntityID']="test");

console.log(data);

Solution 2:

If your "final result" is the result you want to achieve, you don't want to push anything. You're just setting a new property on the entries that already exist in the array. So, loop through and do that:

data.forEach(function(entry) {
    entry.EntityID = "12458412548";
});

(Or a simple for loop.)

If you're using ES2015+ syntax, you could use an arrow function:

data.forEach(entry => entry.EntityID = "12458412548");

...or a for-of loop:

for (const entry of data) {
    entry.EntityID = "12458412548";
}

Solution 3:

DEMO

var jsonObj = [{"devices":{"dID":"TLSM01"},"uuid":"e863c776-f939-4761-bbce-bf0501b42ef7"},
 {"devices":{"dID":"TLSM01"},"uuid":"5a0cd70d-891d-48d8-b205-e92e828ac445"}];
 
jsonObj.map(item => item.devices["EntityID"] = "12458412548");

console.log(jsonObj);