What is difference between Array.isArray and jQuery.isArray?

Question

They seem to be the same.

Internally jQuery just maps its own $.isArray to the native Array.isArray.*

Maybe it's a compatibility thing. Try checking previous revisions of this function — Alon Eitan
– Alon Eitan, Commented Jul 19, 2017 at 6:39
@AlivetoDie Your link points to unrelated question. It seems to be similar, but it isn't. How it can help me? — victordobry
– victordobry, Commented Jul 19, 2017 at 11:38
@AlonEitan Probably. But why it isn't deprecated, if it just maps to a native function? — victordobry
– victordobry, Commented Jul 19, 2017 at 11:40

Alon Eitan · Accepted Answer · 2017-07-19 12:29:51Z

9

After further investigation I found this commit where they replaced jQuery.isArray with the native Array.isArray().

They also announced here that $.isArray is officially deprecated.

The function still exist for backward compatibility but I guess it will be dropped completly in a future jQuery release.

answered Jul 19, 2017 at 12:29

Alon Eitan

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Comments

Death-is-the-real-truth · Accepted Answer · 2017-07-19 07:06:04Z

3

There is no difference.

jQuery just prototype the JavaScript's native isArray function.

something that will look like-

jQuery.prototype.isArray = Array.isArray;

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answered Jul 19, 2017 at 6:34

Sagar V

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OP is in confusion and it is OP's assumption that both are same. This answer confirming it. @AlivetoDie

For what reason? If it would be for backward compatibility, it should be marked as deprecated, but it isn't.