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empty when resolves with 1 undefined argument in jQuery 3 (was 0 arguments in jQuery 2) #3442

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i23098 opened this issue Dec 9, 2016 · 1 comment
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@i23098
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@i23098 i23098 commented Dec 9, 2016

Description

I use dynamic array of deferreds to load 0 to N things and then loop through the arguments in the done callback. Upgrading to jQuery 3.1.1 from 2.2.4 and now my code breaks :(

Link to test case

Minimal test case is call $.when with no arguments, so it should resolve with no arguments too...

2.2.4 - https://jsfiddle.net/nuzy6b43/ - This will correctly have 0 arguments in the done callback
3.1.1 - https://jsfiddle.net/4qys5duk/ - This will incorrectly have 1 argument in the done callback

@gibson042
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@gibson042 gibson042 commented Dec 11, 2016

Nice catch. Thanks, @i23098!

@gibson042 gibson042 self-assigned this Dec 11, 2016
@gibson042 gibson042 added the Deferred label Dec 11, 2016
@gibson042 gibson042 added this to the 3.2.0 milestone Dec 11, 2016
gibson042 added a commit to gibson042/jquery that referenced this issue Dec 11, 2016
gibson042 added a commit that referenced this issue Dec 16, 2016
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