How can I replace and removing space in the keys in object javascript?

Question

I have object like this :

let output = 
[
  {
    Email: '[email protected]',
    KolomB: 'Haha',
    KolomC: 6,
    ' Kolom D ': '3.000.000',
    KolomE: 2022-01-01T16:59:48.000Z
  },
  {
    Email: '[email protected]',
    KolomB: 'blabla',
    KolomC: 6,
    ' Kolom D ': '3.000.000',
    KolomE: 2022-01-01T16:59:48.000Z
  }
]

I want to remove the spaces if occurs in keys inside the object.

this is my desired output :

output = 
[
  {
    Email: '[email protected]',
    KolomB: 'Haha',
    KolomC: 6,
    KolomD: '3.000.000',
    KolomE: 2022-01-01T16:59:48.000Z
  },
  {
    Email: '[email protected]',
    KolomB: 'blabla',
    KolomC: 6,
    KolomD: '3.000.000',
    KolomE: 2022-01-01T16:59:48.000Z
  }
]

As you can see, i want to remove the space in Kolom D to be KolomD in output variable.

Here's what i've done before :

for (let i = 0; i < output.length; i++) {
 Object.keys(output[i]).forEach(function(key) {
  key = key.replace(/\s+/g, "").replace(/^\s+|\s+$/g, "")
 })
}

but the output still not changing. How to push/changing the keys to the output ?

Please let me know if you need more information if it's still not enough to solve that problem

You can't modify keys. You can either create a new object or add a new property and remove the old one. — user16540390
– user16540390, Commented Apr 17, 2022 at 12:35
yea I would suggest adding a new property and removing the old one using delete — miyav miyav
– miyav miyav, Commented Apr 17, 2022 at 12:37
I was thinking making a new object with new keys. But, how can I insert the value from output to my new object with new keys ? — user18605090
– user18605090, Commented Apr 17, 2022 at 12:40
Why do you need two replace? I don't understand why the second replace is necessary. — user16540390
– user16540390, Commented Apr 17, 2022 at 13:02

score 2 · Accepted Answer · 2022-04-17 13:06:10Z

You can't modify keys. You can either create a new object or add a new property and remove the old one.

This is a way to create a new object

let output = [{ Email: '[email protected]', KolomB: 'Haha', KolomC: 6, ' Kolom D ': '3.000.000', KolomE: '2022-01-01T16:59:48.000Z' }, { Email: '[email protected]', KolomB: 'blabla', KolomC: 6, ' Kolom D ': '3.000.000', KolomE: '2022-01-01T16:59:48.000Z' }];

output = output.map(el => 
  Object.fromEntries(Object.entries(el).map(([key, value]) => ([
    key.replace(/\s+/g, ""),
    value
  ])))
);

console.log(output);

The first map iterates over the array and converts each element. Object.entries converts each element to an array. The second map applies the algorithm from your question to each key. Object.fromEntries converts the array back to an object.

I also removed the second .replace. It's not necessary. The first replace already removes all spaces.

PeterKA · Accepted Answer · 2022-04-17 13:09:41Z

1

You can use a for...of loop and String#replace:

const output = [ { Email: '[email protected]', KolomB: 'Haha', KolomC: 6, ' Kolom D ': '3.000.000', KolomE: '2022-01-01T16:59:48.000Z' }, { Email: '[email protected]', KolomB: 'blabla', KolomC: 6, ' Kolom D ': '3.000.000', KolomE: '2022-01-01T16:59:48.000Z' } ];

for(let [i, obj] of Object.entries(output)) {
    const newobj = Object.fromEntries(
        Object.entries(obj).map(([key,value]) => [key.replace(/\s+/g, ''),value])
    );
    output[+i] = newobj;
}

console.log( output );

answered Apr 17, 2022 at 13:09

PeterKA

24.7k5 gold badges28 silver badges52 bronze badges

Comments

Tanay · Accepted Answer · 2022-04-17 12:42:16Z

0

You can try this:

let output = 
[
  {
    Email: '[email protected]',
    KolomB: 'Haha',
    KolomC: 6,
    ' Kolom D ': '3.000.000',
    KolomE: 2022-01-01T16:59:48.000Z
  },
  {
    Email: '[email protected]',
    KolomB: 'blabla',
    KolomC: 6,
    ' Kolom D ': '3.000.000',
    KolomE: 2022-01-01T16:59:48.000Z
  }
]
for (let i = 0; i < output.length; i++) {
 Object.keys(output[i]).forEach(function(key) {
  const newkey = key.replace(/\s+/g, "").replace(/^\s+|\s+$/g, "")
  const value = output[i][key];
  delete output[i][key];
  output[i][newkey] = value;
 })
}

answered Apr 17, 2022 at 12:42

Tanay

8991 gold badge8 silver badges13 bronze badges

Collectives™ on Stack Overflow

How can I replace and removing space in the keys in object javascript?

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related