javascript check if object property exists
var person = {'first_name': 'bill','age':20};
if ( person.hasOwnProperty('first_name') ) {
//person has a first_name property
}javascript check if object property exists
var person = {'first_name': 'bill','age':20};
if ( person.hasOwnProperty('first_name') ) {
//person has a first_name property
}Check object property exists or not in js
const user1 = {
username: "john"
};
const user2 = {
username: "duo"
authority: "grepper"
}
// check object property
console.log(user1.hasOwnProperty('authority')); // false
console.log(user2.hasOwnProperty('authority')); // trueCopyright © 2021 Codeinu
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