jQuery.each() used to work on strings, but it doesn't in 1.9

[[email protected]…]

In jQuery 1.8.3 I could use .each() on a string and it would iterate over the characters in that string, but in 1.9 it fails with:

Uncaught TypeError: Cannot use 'in' operator to search for <x> in <y>

Where <x> is an index and <y> is a string.

The bug is in 'isArraylike()':

return type === "array" || type !== "function" &&
		( length === 0 ||
		typeof length === "number" && length > 0 && ( length - 1 ) in obj );

It's the

(length - 1) in obj

that's the problem.

I'm not sure what the intention was with that check otherwise I'd submit a patch myself.

[[email protected]…]

Oops, fogot jsFiddle link:

​http://jsfiddle.net/HwxMX/

[dmethvin]

Strings aren't one of the supported types. ​http://api.jquery.com/jQuery.each/

[Alex]

Shouldn't it report that then? Instead of this obscure error? Cheers, Alex

[dmethvin]

Sorry but we're not getting into the business of checking all incoming args to see if someone passed invalid data, and then giving long descriptive error messages. Read the API documentation.