map through keys javascript
var myObject = { 'a': 1, 'b': 2, 'c': 3 }; Object.keys(myObject).map(function(key, index) { myObject[key] *= 2; }); console.log(myObject); // => { 'a': 2, 'b': 4, 'c': 6 }
Source: stackoverflow.com
key value in map javascript
const map = {"a": 1, "b": 2, "c": 3}; const mapped = Object.entries(map).map(([k,v]) => `${k}_${v}`); console.log(mapped);
Source: stackoverflow.com
map through keys javascript
var myObject = { 'a': 1, 'b': 2, 'c': 3 }; for (var key in myObject) { if (myObject.hasOwnProperty(key)) { myObject[key] *= 2; } } console.log(myObject); // { 'a': 2, 'b': 4, 'c': 6 }
Source: stackoverflow.com
initialize a map js
let map = new Map() map['bla'] = 'blaa' map['bla2'] = 'blaaa2' console.log(map) // Map { bla: 'blaa', bla2: 'blaaa2' }
Source: developer.mozilla.org
map in javascript
['elem', 'another', 'name'].map((value, index, originalArray) => { console.log(.....) });
js map key value
for (const [key, value] of myMap.entries()) { console.log(key, value); }
Source: stackoverflow.com