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map in array js

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Annoying Anteater answered on November 25, 2019 Popularity 8/10 Helpfulness 1/10

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map in array js

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20,30

Popularity 8/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript map

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Contributed on Aug 23 2023

Annoying Anteater

0 Answers Avg Quality 2/10

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array map javascript

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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

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Contributed on Nov 25 2019

Calm Cockroach

0 Answers Avg Quality 2/10

what is array,map in javscript

Comment

.map() is a JavaScript array method that creates a new array with the results of calling a provided function on every element in the calling array. It does not modify the original array. Here's an example:
let numbers = [1, 2, 3, 4, 5];
let doubledNumbers = numbers.map(number => number * 2);
console.log(doubledNumbers);  // Output: [2, 4, 6, 8, 10]

In this example, the .map() method is used to double each element in the numbers array and returns a new doubledNumbers array with the results.

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jan 30 2023

Hustler

0 Answers Avg Quality 2/10

map in an array

Comment

let numbers = [33, 22, 44, 55, 66, 77, 88, 99];
const getNumbers = numbers.map(number => number * 2);
console.log(getNumbers);
//Expected output:
/*[
    66,  44,  88, 110,
   132, 154, 176, 198
 ]
 */

Popularity 10/10 Helpfulness 3/10 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

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

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Contributed on May 22 2022

naly moslih

0 Answers Avg Quality 2/10

map in javascript

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// Use map to create a new array in memory. Don't use if you're not returning
const arr = [1,2,3,4]

// Get squares of each element
const sqrs = arr.map((num) => num ** 2)
console.log(sqrs)
// [ 1, 4, 9, 16 ]

//Original array untouched
console.log(arr)
// [ 1, 2, 3, 4 ]

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Oct 19 2020

Caleb McNevin

0 Answers Avg Quality 2/10

map in javascript

Comment

const arr = [1, 2, 3, 4, 5, 6];
const mapped = arr.map(el => el + 20);	//[21, 22, 23, 24, 25, 26]

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Nov 17 2021

kinjal suryavanshi

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 9/10 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 in javascript

Comment

let myMap = new Map()

let keyString = 'a string'
let keyObj    = {}
// setting the values
myMap.set(keyString, "value associated with 'a string'")
myMap.set(keyObj, 'value associated with keyObj')
myMap.set(keyFunc, 'value associated with keyFunc')
myMap.size              // 3
// getting the values
myMap.get(keyString)    // "value associated with 'a string'"
myMap.get(keyObj)       // "value associated with keyObj"
myMap.get(keyFunc)      // "value associated with keyFunc"

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: developer.mozilla.org

Tags: javascript j

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Contributed on Jun 21 2020

Vishal

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

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

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Contributed on May 01 2023

Kim Kroll

0 Answers Avg Quality 2/10

map in array js

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