javascript map

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Maite
29 May 2017
1function listFruits() {
2  let fruits = ["apple", "cherry", "pear"]
3  
4  fruits.map((fruit, index) => {
5    console.log(index, fruit)
6  })
7}
8
9listFruits()
10
11// https://jsfiddle.net/tmoreland/16qfpkgb/3/
source
Julia
20 Oct 2019
1const numbers = [0,1,2,3];
2
3console.log(numbers.map((number) => {
4  return number;
5}));
source
Alex
23 Apr 2020
1// make new array from edited items of another array
2var newArray = unchangedArray.map(function(item, index){
3  return item;	// do something to returned item
4});
5
6// same in ES6 style (IE not supported)
7var newArray = unchangedArray.map((item, index) => item);
Angèle
13 Jun 2017
1const myArray = ['Sam', 'Alice', 'Nick', 'Matt'];
2
3// Appends text to each element of the array
4const newArray = myArray.map(name => {
5	return 'My name is ' + name; 
6});
7console.log(newArray); // ['My name is Sam', 'My Name is Alice', ...]
8
9// Appends the index of each element with it's value
10const anotherArray = myArray.map((value, index) => index + ": " + value);
11console.log(anotherArray); // ['0: Sam', '1: Alice', '2: Nick', ...]
12
13// Starting array is unchanged
14console.log(myArray); // ['Sam', 'Alice', 'Nick', 'Matt']
Nesrine
10 Jun 2019
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76	width: 1%;
77}let map = new Map([iterable]);
78Code language: JavaScript (javascript)
Maximilian
05 Feb 2016
1// The map() method creates a new array populated with the 
2// results of calling a provided function on every element
3// in the calling array.
4const array1 = [1, 4, 9, 16];
5
6// pass a function to map
7const map1 = array1.map(x => x * 2);
8
9console.log(map1);
10// expected output: Array [2, 8, 18, 32]
Marta
14 Nov 2018
1The map() method creates a new array with the results of calling a provided function on every element in the calling array.
Elisa
06 Apr 2016
1var r = 4
2console.log(r)
3
Francesca
17 Feb 2017
1sort
Hadrien
10 Nov 2018
1import react
2
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