'use strict';
// ECMAScript 2017
const object = {'a': 1, 'b': 2, 'c' : 3};
for (const [key, value] of Object.entries(object)) {
console.log(key, value);
}Object.entries(obj).forEach(([key, value]) => {
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 guaranteedObject.keys(obj).forEach(function(key) {
console.log(key, obj[key]);
});let users = {
Alan: {
age: 27,
online: true
},
Jeff: {
age: 32,
online: true
},
Sarah: {
age: 48,
online: true
},
Ryan: {
age: 19,
online: true
}
};
function isEveryoneHere(userObj) {
return ["Alan", "Jeff", "Sarah", "Ryan"].every(name =>
userObj.hasOwnProperty(name)
);
}