return object from map javascript code example
Example 1: javascript map array
const myArray = ['Sam', 'Alice', 'Nick', 'Matt'];
const newArray = myArray.map(name => {
return 'My name is ' + name;
});
console.log(newArray);
const anotherArray = myArray.map((value, index) => index + ": " + value);
console.log(anotherArray);
console.log(myArray);
Example 2: object to map javascript
const map = new Map(Object.entries({foo: 'bar'}));
map.get('foo');
Example 3: how to use the map method in javascript
const numbers = [1, 2, 3, 4, 5];
const bigNumbers = numbers.map(number => {
return number * 10;
});
Example 4: javascript map to object
Object.fromEntries(Map)
Example 5: map a property from array of objects javascript
var result = objArray.map(function(a) {return a.foo;});
Example 6: map object
let myMap = new Map()
let keyString = 'a string'
let keyObj = {}
let keyFunc = function() {}
myMap.set(keyString, "value associated with 'a string'")
myMap.set(keyObj, 'value associated with keyObj')
myMap.set(keyFunc, 'value associated with keyFunc')
myMap.size
myMap.get(keyString)
myMap.get(keyObj)
myMap.get(keyFunc)
myMap.get('a string')
myMap.get({})
myMap.get(function() {})