var person={
"first_name":"Harry",
"last_name":"Potter",
"age":14
};
var personSize = Object.keys(person).length; //gets number of properties (3) // Object Entries returns object as Array of [key,value] Array
const object1 = {
a: 'somestring',
b: 42
}
Object.entries(object1) // Array(2) [["a", "something"], ["b", 42]]
.forEach(([key, value]) => console.log(`${key}: ${value}`))
// "a: somestring"
// "b: 42"const object1 = {
a: 'somestring',
b: 42,
c: false
};
console.log(Object.keys(object1));
// expected output: Array ["a", "b", "c"]var myObj = {no:'u',my:'sql'}
var keys = Object.keys(myObj);//returnes the array ['no','my'];var buttons = {
foo: 'bar',
fiz: 'buz'
};
for ( var property in buttons ) {
console.log( property ); // Outputs: foo, fiz or fiz, foo
}const object1 = {
a: 'somestring',
b: 42,
c: false
};
console.log(Object.keys(object1));