Breaking News: Grepper is joining You.com. Read the official announcement!

array map

Add Answer

Cute Cowfish answered on November 25, 2019 Popularity 10/10 Helpfulness 2/10

answer array map

related array map javascript

related array map

related array map example

related array map

related JavaScript Array map()

related array mdn map

related array.map

related array.map js

related Array.map method

array map

Comment

-2

let numbers = [1, 2, 3, 4]
let filteredNumbers = numbers.map(function(num, index) {
  if (index < 3) {
     return num
  }
})
// index goes from 0, so the filterNumbers are 1,2,3 and undefined.
// filteredNumbers is [1, 2, 3, undefined]
// numbers is still [1, 2, 3, 4]

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: developer.mozilla.org

Tags: array-map javascript

Link to this answer
Share Copy Link

Contributed on Apr 24 2021

Cute Cowfish

0 Answers Avg Quality 2/10

Closely Related Answers

array map javascript

Comment

const array1 = [1, 4, 9, 16];

// pass a function to map
const map1 = array1.map(x => x * 2);

console.log(map1);
// expected output: Array [2, 8, 18, 32]

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: array-map arra

Link to this answer
Share Copy Link

Contributed on Nov 25 2019

Calm Cockroach

0 Answers Avg Quality 2/10

array map

Comment

const array1 = [1, 4, 9, 16];

// pass a function to map
const map1 = array1.map(x => x * 2);

console.log(map1);
// expected output: Array [2, 8, 18, 32]

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: array-map arra

Link to this answer
Share Copy Link

Contributed on Dec 22 2019

Zealous Zebra

0 Answers Avg Quality 2/10

array map example

Comment

const people = [
  { firstName: 'Brian', lastName: 'Troncone' },
  { firstName: 'Todd', lastName: 'Motto' }
];
const peopleWithFullName = people.map(person => ({
  ...person,
  fullName: `${person.firstName} ${person.lastName}`
}));

// [{ firstName: 'Brian', lastName: 'Troncone', fullName: 'Brian Troncone' }, {firstName: 'Todd', lastName: 'Motto', fullName: 'Todd Motto' }]
console.log(peopleWithFullName);
 
--
 
const people = [
  { firstName: 'Brian', lastName: 'Troncone' },
  { firstName: 'Todd', lastName: 'Motto' }
];
const lastNames = people.map(person => person.lastName);

// [ 'Troncone', 'Motto' ]
console.log(lastNames);

Popularity 9/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: array-map arra

Link to this answer
Share Copy Link

Contributed on May 10 2023

Quaint Quelea

0 Answers Avg Quality 2/10

array map

Comment

let numbers = [1, 2, 3, 4]
let filteredNumbers = numbers.map(function(_, index) {
  if (index < 3) {
     return num
  }
})
// index goes from 0, so the filterNumbers are 1,2,3 and undefined.
// filteredNumbers is [1, 2, 3, undefined]
// numbers is still [1, 2, 3, 4]

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: array-map arra

Link to this answer
Share Copy Link

Contributed on Apr 24 2021

Cute Cowfish

0 Answers Avg Quality 2/10

JavaScript Array map()

Comment

const numbers1 = [45, 4, 9, 16, 25];
const numbers2 = numbers1.map(myFunction);

function myFunction(value, index, array) {
  return value * 2;
}

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on May 22 2022

naly moslih

0 Answers Avg Quality 2/10

array mdn map

Comments(1)

let new_array = arr.map(function callback( currentValue[, index[, array]]) {
    // return element for new_array
}[, thisArg])

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Jun 15 2020

Bad Bison

0 Answers Avg Quality 2/10

array.map

Comment

var x = [1,2,3,4].map( function(item) {return item * 10;});

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: search.brave.com

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Mar 24 2022

Outstanding Otter

0 Answers Avg Quality 2/10

array.map

Comment

let arr = [1,2,3]

/*
  map accepts a callback function, and each value of arr is passed to the 
  callback function. You define the callback function as you would a regular
  function, you're just doing it inside the map function
  
  map applies the code in the callback function to each value of arr, 
  and creates a new array based on your callback functions return values
*/
let mappedArr = arr.map(function(value){
	return value + 1
})

// mappedArr is:
> [2,3,4]

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Jan 25 2022

QuietHumility

0 Answers Avg Quality 2/10

array.map js

Comment

The map() method creates a new array populated with the results of calling a provided function on every element in the calling array.

// the array: arr = [1,2,3]
arr.map( item(value), index(where in the array), array(The array on which they run));

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on May 01 2023

Kim Kroll

0 Answers Avg Quality 2/10

Array.map method

Comment

const shoppingList = ['Oranges', 'Cassava', 'Garri', 'Ewa', 'Dodo', 'Books']

export default function List() {
  return (
    <>
      {shoppingList.map((item, index) => {
        return (
          <ol>
            <li key={index}>{item}</li>
          </ol>
        )
      })}
    </>
  )
}

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: www.freecodecamp.org

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Nov 05 2022

Annoying Alpaca

0 Answers Avg Quality 2/10

array map

Contents

More Related Answers

array map

Closely Related Answers

array map javascript

array map

array map example

array map

JavaScript Array map()

array mdn map

array.map

array.map

array.map js

Array.map method

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.