Created by Ates GoralLinked to 24.2m issues across 269 teams
Yes, you can check if a key exists in a JavaScript object using the hasOwnProperty()
method.
For example, if we have an object person
with the properties name
, age
, and gender
, we can check if the name
property exists using the following code:
if (person.hasOwnProperty('name')) { console.log('The person object has a name property'); }
In this example, the hasOwnProperty()
method is used to check if the name
property exists in the person
object. If it does, the console.log()
statement will be executed.