Add item to the first object inside an array of objects

Question

I have an array of Objects.

{projectId:10,projectName:design,status:done},
{projectId:11,projectName:code,status:onGoing}

Now, this array is coming from an API call and its dynamic. I want to insert an item, {time:30} into the first object in the array. That is, into the object with the index 0.

So, the output will be like this.

{projectId:10,projectName:design,status:done,time:30},
{projectId:11,projectName:code,status:onGoing}

I have tried the following code:

let projects = [{projectId:10,projectName:design,status:done},
{projectId:11,projectName:code,status:onGoing} ];

let newArray = projects.slice();

newArray[0].push({ time: '30' });

console.log(newArray);

But the above code is giving me the following error.

TypeError: newArray[0].push is not a function

Can you help me out with this problem. Thanks,

newArray[0].time = 30

dbramwell
– dbramwell

2019-04-11 14:30:02 +00:00
Commented Apr 11, 2019 at 14:30 — dbramwell
– dbramwell, Commented Apr 11, 2019 at 14:30

Ashish Ranjan · Accepted Answer · 2019-04-11 14:30:26Z

2

Element at index 0 is an Object, push() is a method of Array prototype.

You can use the method as shown below.

let projects = [{projectId:10, projectName: 'design' ,status: 'done'},
{projectId:11,projectName:'code',status:'onGoing'} ];

projects[0].time = 30

console.log(projects)

answered Apr 11, 2019 at 14:30

Ashish Ranjan

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Maheer Ali · Accepted Answer · 2019-04-11 14:30:24Z

1

You can't push() to an object. set time property of the item the 0 index

newArray[0].time = '30'

You can also use Object.assign()

Object.assign(newArray[0],{time:'30'});

answered Apr 11, 2019 at 14:30

Maheer Ali

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Comments

J. Knabenschuh · Accepted Answer · 2019-04-11 14:31:01Z

0

Does the follwoing work for you:

projects[0].time = 30;
console.log(projects);

answered Apr 11, 2019 at 14:31

J. Knabenschuh

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