'use strict';
// ECMAScript 2017
const object = {'a': 1, 'b': 2, 'c' : 3};
for (const [key, value] of Object.entries(object)) {
console.log(key, value);
}const fruits = { apple: 28, orange: 17 }
for(key in fruits){
console.log(key)
}const object1 = {
a: 'somestring',
b: 42
};
for (let [key, value] of Object.entries(object1)) {
console.log(`${key}: ${value}`);
}
// expected output:
// "a: somestring"
// "b: 42"
// order is not guaranteed// Iterate Through the Keys of an Object
const usersObj = {
Alan: {
online: false,
},
Jeff: {
online: true,
},
Sarah: {
online: false,
},
};
function countOnline(usersObj) {
let count = 0;
for (let user in usersObj) {
if (usersObj[user].online === true) count++;
}
return count;
}
console.log(countOnline(usersObj));