map to array javascript
let map = new Map().set('a', 1).set('b', 2),
array = Array.from(map, ([name, value]) => ({ name, value }));
console.log(array);map to array javascript
let map = new Map().set('a', 1).set('b', 2),
array = Array.from(map, ([name, value]) => ({ name, value }));
console.log(array);node get value from map
let myMap = new Map();
myMap.set("key1", "value1");
myMap.set("key2", "value2");
console.log(myMap.has("key1")); // true
console.log(myMap.has("key2")); // true
console.log(myMap.get("key1")); // value1
console.log(myMap.get("key2")); // value2
// NOTE: DO NOT try to access map values using [].
// myMap["key1"] = "value1";javascript map array
const sweetArray = [2, 3, 4, 5, 35]
const sweeterArray = sweetArray.map(sweetItem => {
return sweetItem * 2
})
console.log(sweeterArray)map a keys from an array in a separate arraylist javascript
const myUsers = [
{ name: 'shark', likes: 'ocean' },
{ name: 'turtle', likes: 'pond' },
{ name: 'otter', likes: 'fish biscuits' }
]
const usersByLikes = myUsers.map(item => {
const container = {};
container[item.name] = item.likes;
container.age = item.name.length * 10;
return container;
})
console.log(usersByLikes);Copyright © 2021 Codeinu
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