Answers for "checking if a key exist on an object using ?. in javascript"

17

how to check if object has key javascript

myObj.hasOwnProperty('key') // it checks object for particular key and not on prototype
Posted by: Guest on March-28-2020
-1

js check if object key exists

var obj = { key: undefined };
obj["key"] !== undefined // false, but the key exists!
Posted by: Guest on July-23-2020

Code answers related to "checking if a key exist on an object using ?. in javascript"

Code answers related to "Javascript"

Browse Popular Code Answers by Language