map object keys javascript

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Poor Platypus answered on January 11, 2022 Popularity 1/10 Helpfulness 1/10

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map object keys javascript

Comment

const object = {1: 'a', 2: 'b', 3: 'c'};

// convert to the array keys 
let array =Object.keys(object);

// index is based on zero
let newArray = array.map((item, index) => {
    console.log(`Item => "${item}", Index => ${index}`);
    return item * 2;
});

// newArray will be [2, 4, 6]

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: tutorialmeta.com

Tags: javascript map object

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Contributed on Feb 09 2022

Poor Platypus

0 Answers Avg Quality 2/10

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object key map javascript

Comment

const object = {1: 'a', 2: 'b', 3: 'c'};

// convert to the array keys 
let array =Object.keys(object);

// index is based on zero
let newArray = array.map((item, index) => {
    console.log(`Item => "${item}", Index => ${index}`);
    return item * 2;
});

// newArray will be [2, 4, 6]

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: tutorialmeta.com

Tags: javascript j

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Contributed on Feb 09 2022

Poor Platypus

0 Answers Avg Quality 2/10

object keys map in js

Comment

// simple array
const arr = ['a', 'b', 'c'];
console.log(Object.keys(arr)); // console: ['0', '1', '2']

// array-like object
const obj = { 0: 'a', 1: 'b', 2: 'c' };
console.log(Object.keys(obj)); // console: ['0', '1', '2']

// array-like object with random key ordering
const anObj = { 100: 'a', 2: 'b', 7: 'c' };
console.log(Object.keys(anObj)); // console: ['2', '7', '100']

// getFoo is a property which isn't enumerable
const myObj = Object.create({}, {
  getFoo: {
    value: function () { return this.foo; }
  }
});
myObj.foo = 1;
console.log(Object.keys(myObj)); // console: ['foo']

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Jan 11 2022

Different Dragonfly

0 Answers Avg Quality 2/10

object.keys map

Comment

const object = {'a': 1,'b': 2, 'c': 3};

// convert to the array keys 
let array = Object.keys(object);

console.log(array);
// => ['a', 'b', 'c']

let newArray = array.map(item => return item + '-X' )

console.log(newArray);
// => ['a-X', 'b-X', 'c-X']

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: tutorialmeta.com

Tags: javascript map

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Contributed on Feb 09 2022

Poor Platypus

0 Answers Avg Quality 2/10

map object keys javascript

Comment

const object = {1: 'a', 2: 'b', 3: 'c'};

// convert to the array keys 
let array =Object.keys(object);

let newArray = array.map((item, index) => {
    return item * 2;
});

// newArray will be [2, 4, 6]

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: coderecharge.com

Tags: javascript map object

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Contributed on Aug 05 2022

Poor Platypus

0 Answers Avg Quality 2/10

map object keys javascript

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