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how the map function works javascript

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DCmax1k answered on April 7, 2020 Popularity 10/10 Helpfulness 3/10

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how the map function works javascript

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const array = [2, 5, 9];
let squares = array.map((num) => num * num);

console.log(array); // [2, 5, 9]
console.log(squares); // [4, 25, 81]

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript map-function

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Contributed on Apr 07 2020

DCmax1k

0 Answers Avg Quality 2/10

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How does map works in javascript?

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const products = [
    { name: 'Laptop', price: 32000, brand: 'Lenovo', color: 'Silver' },
    { name: 'Phone', price: 700, brand: 'Iphone', color: 'Golden' },
    { name: 'Watch', price: 3000, brand: 'Casio', color: 'Yellow' },
    { name: 'Aunglass', price: 300, brand: 'Ribon', color: 'Blue' },
    { name: 'Camera', price: 9000, brand: 'Lenovo', color: 'Gray' },
];

const productName = products.map(product => product.name);
console.log(productName);
//Expected output:[ 'Laptop', 'Phone', 'Watch', 'Aunglass', 'Camera' ]

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Sep 11 2021

Ariful Islam Adil(Code Lover)

0 Answers Avg Quality 2/10

how to use the map method in javascript

Comment

const numbers = [1, 2, 3, 4, 5]; 

const bigNumbers = numbers.map(number => {
  return number * 10;
});

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: www.codecademy.com

Tags: javascript j

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Contributed on Apr 08 2020

TechWhizKid

0 Answers Avg Quality 2/10

map function in js

Comment

const numbers = [1, 4, 9];
const roots = numbers.map((num) => Math.sqrt(num));

// roots is now     [1, 2, 3]
// numbers is still [1, 4, 9]

Popularity 9/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Jul 08 2023

Imran Khan

0 Answers Avg Quality 2/10

javascript map function

Comment

/* Answer to: "javascript map function" */

/*
  <Array>.map() - One of the most useful in-built methods in JavaScript (imo).

  The map() method creates a new array populated with the results of calling
  a provided function on every element in the calling array.
 
  For more information, click on the source link.

  Let me make some examples of it's uses:
*/

let array = [1, 4, 9, 16];
array.map(num => num * 2); // [2, 8, 18, 32];
array.map(pounds => `£${pounds}.00`); // ["£1.00", "£4.00", "£9.00", "£16.00"];
array.map(item => Math.sqrt(item)); // [1, 2, 3, 4];

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Oct 29 2020

TigerYT

0 Answers Avg Quality 2/10

map function in js

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var array = "M 175 0 L 326.55444566227675 87.50000000000001 L 326.55444566227675 262.5 L 175 350 L 23.445554337723223 262.5 L 23.44555433772325 87.49999999999999 L 175 0".split(" ");

let neWd = array.map(x => {
	if (x === 'M' || x === 'L'){
		return x;
	}else{
		return x * 2;
	}
}).join(' ')

console.log(neWd);

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Jul 26 2022

Vishnu

0 Answers Avg Quality 2/10

map function in js

Comment

	let arr = [1, 2, 3, 4, 5];      // map function in JS
 	let newArr=arr.map((item) => {
    return item * item;
 })
 console.log(newArr)
//output
// [1,4,9,16,25]

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Feb 09 2023

Muhammad Rayyan

0 Answers Avg Quality 2/10

map function

Comment

let users = [
  { firstName: "Susan", lastName: "Steward", age: 14, hobby: "Singing" },
  { firstName: "Daniel", lastName: "Longbottom", age: 16, hobby: "Football" },
  { firstName: "Jacob", lastName: "Black", age: 15, hobby: "Singing" }
];

Popularity 9/10 Helpfulness 2/10 Language whatever

Source: www.freecodecamp.org

Tags: map-function map-functi

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Contributed on Mar 08 2023

Prasanth S

0 Answers Avg Quality 2/10

JavaScript Map Function

Comment

const myAwesomeArray = [5, 4, 3, 2, 1]

myAwesomeArray.map(x => x * x)

// >>>>>>>>>>>>>>>>> Output: [25, 16, 9, 4, 1]

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: www.freecodecamp.org

Tags: javascript j

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Contributed on Dec 30 2021

Spotless Spider

0 Answers Avg Quality 2/10

javaScript Map() Method

Comment

// Create a Map
const fruits = new Map([
  ["apples", 500],
  ["bananas", 300],
  ["oranges", 200]
]);

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 22 2022

naly moslih

0 Answers Avg Quality 2/10

how the map function works javascript

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