javascript if object has key

myObj.hasOwnProperty('key') // it checks object for particular key and not on prototype   

4.14
7
D. L. Forbes 110 points

                                    if ('key' in myObj)
// better
if (!myObj.hasOwnProperty('key'))

4.14 (7 Votes)
0
4.1
10
Dyeyyuen 90 points

                                    if('key' in object)

4.1 (10 Votes)
0
4.17
6

                                    if ('key' in myObj)

4.17 (6 Votes)
0
5
1
Ngduytkim 120 points

                                    "key" in obj // true, regardless of the actual value

5 (1 Votes)
0
4
4

                                    Object.prototype.hasOwnProperty()

4 (4 Votes)
0
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