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 }const object1 = {
a: 'somestring',
b: 42,
c: false
};
console.log(Object.keys(object1));
// expected output: Array ["a", "b", "c"]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 }const object = {1: 'a', 2: 'b', 3: 'c'};
// convert to the array keys
let array =Object.keys(object);
// index is based on zero
let newArray = array.map((item, index) => {
console.log(`Item => "${item}", Index => ${index}`);
return item * 2;
});
// newArray will be [2, 4, 6]