Birdwatch Note Rating
2023-10-10 13:58:35 UTC - HELPFUL
Rated by Participant: D5F6867FC607F9BFAE00D59E254EC2870358018ACFF790B4F16CAB1D76BBE050
Participant Details
Original Note:
`in` operator checks if the specified property is in the specified object [...] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/in Array [1,2,3,4] is an object {0: 1, 1: 2, 2: 3, 3: 4, length: 4} Doing `k in l` is checking if l has something on prop k l[0] === 1 l[4] === undefined 'length' in l === true To check values: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
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