var yourArray= yourArray.map(Number);

const shoppingList = [‘Oranges’, ‘Cassava’, ‘Garri’, ‘Ewa’, ‘Dodo’, ‘Books’]</p><br /> <p>export default function List() {<br /><br /> return (<br /><br /> <><br /><br /> {shoppingList.map((item, index) => {<br /><br /> return (<br /><br /> <ol><br /><br /> <li key={index}>{item}</li><br /><br /> </ol><br /><br /> )<br /><br /> })}<br /><br /> </><br /><br /> )<br /><br /> }

const numbers = [1, 2, 3, 4, 5]; </p><br /> <p>const bigNumbers = numbers.map(number => {<br /><br /> return number * 10;<br /><br /> });

The map() method creates a new array populated with the results of calling<br /><br /> a provided function on every element in the calling array.</p><br /> <p>const array1 = [1, 4, 9, 16];</p><br /> <p>// pass a function to map<br /><br /> const map1 = array1.map(x => x * 2);</p><br /> <p>console.log(map1);<br /><br /> // expected output: Array [2, 8, 18, 32]

// Map objects are collections of key-value pairs.<br /><br /> // A key in the Map may only occur once, it is unique in the Map ‘s collection<br /><br /> let map = new Map()<br /><br /> let keyArray = ‘Array'<br /><br /> map.set(keyArray, [1, 2, 3, 4, 5])<br /><br /> map.get(keyArray) // 1, 2, 3, 4, 5

function map(array, transform) {<br /><br /> let mapped = [];<br /><br /> for (let element of array) {<br /><br /> mapped.push(transform(element));<br /><br /> }<br /><br /> return mapped;<br /><br /> }</p><br /> <p>let rtlScripts = SCRIPTS.filter(s => s.direction == “rtl”);<br /><br /> console.log(map(rtlScripts, s => s.name));<br /><br /> // → [“Adlam”, “Arabic”, “Imperial Aramaic”, …]

const myMap = new Map();<br /><br /> let userid = 1314124141;</p><br /> <p>myMap.set(‘veri_’ + userid, 1) // set<br /><br /> myMap.set(‘veri_’ + userid, myMap.get(‘veri_’ + userid) + 1) // push</p><br /> <p>console.log(myMap.get(‘veri_’ + userid)) // output: 3

// Arrow function<br /><br /> map((element) => { … } )<br /><br /> map((element, index) => { … } )<br /><br /> map((element, index, array) => { … } )</p><br /> <p>// Callback function<br /><br /> map(callbackFn)<br /><br /> map(callbackFn, thisArg)</p><br /> <p>// Inline callback function<br /><br /> map(function callbackFn(element) { … })<br /><br /> map(function callbackFn(element, index) { … })<br /><br /> map(function callbackFn(element, index, array){ … })<br /><br /> map(function callbackFn(element, index, array) { … }, thisArg)<br /><br />

// Create a Map<br /><br /> const fruits = new Map([<br /><br /> [“apples”, 500],<br /><br /> [“bananas”, 300],<br /><br /> [“oranges”, 200]<br /><br /> ]);

# map function<br /><br /> city_lengths = map(len, [‘sanjose’, ‘cupertino’, ‘sunnyvale’, ‘fremont’])<br /><br /> print(list(city_lengths))</p><br /> <p># [7, 9, 9, 7]<br /><br /> # Map takes a function and a collection of items. It makes a new, empty collection, runs the function on each item in the original collection and inserts each return value into the new collection. It returns the new collection.

const ratings = watchList.map(item => ({<br /><br /> title: item[“Title”],<br /><br /> rating: item[“imdbRating”]<br /><br /> }));