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Syntax
Object.getOwnPropertyNames(obj)
Parameters
Return value
Examples
Example 1 - Retrieve all properties of the User object
function User(firstName, lastName, emailId, age){
this.firstName = firstName;
this.lastName = lastName;
this.emailId = emailId;
this.age = age;
}
console.log(Object.getOwnPropertyNames(new User()));
["firstName", "lastName", "emailId", "age"]
Example 2 - Iterate and print User object properties and values
function User(firstName, lastName, emailId, age){
this.firstName = firstName;
this.lastName = lastName;
this.emailId = emailId;
this.age = age;
}
var user = new User("Ramesh", "Fadatare", "ramesh@gmail.com", 29);
console.log(Object.getOwnPropertyNames(user));
// Logging property names and values using Array.forEach
Object.getOwnPropertyNames(user).forEach(
function (val, idx, array) {
console.log(val + ' -> ' + user[val]);
}
)
["firstName", "lastName", "emailId", "age"]
firstName -> Ramesh
lastName -> Fadatare
emailId -> ramesh@gmail.com
age -> 29
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