javascript object get number of keys code example

Example 1: js get number of keys in object

Object.keys(obj).length

Example 2: javascript get length of object

var person={
    "first_name":"Harry",
    "last_name":"Potter",
    "age":14
};
var personSize = Object.keys(person).length; //gets number of properties (3)

Example 3: js obj getting count of properties

let count = 0;
for (let k in myobj) if (myobj.hasOwnProperty(k)) count++;