matcherFromTokens, error type cannot be called from undefined

[fred.stackoverflow@…]

at line 4914, the length can be 0

so the call

Expr.relative[ tokens[0].type ]

doesn't work.

I change it to

leadingRelative = len === 0 ? null : Expr.relative[ tokens[0].type ]

and it works for me.

I had this error when using jqueryui draggable.

[dmethvin]

Hi Fred,

Can we have a test case? Otherwise we can't tell what the problem is or whether we have fixed it. Use jsfiddle.net or jsbin.com.

[fred.stackoverflow@…]

Hello,

Yes I digged into it further here is the test ​http://jsfiddle.net/msr9w/ open chrome console to see Uncaught TypeError: Cannot read property 'type' of undefined

the issue comes from a selector with a comma $("li,").

it was working in previews versions, but the syntax is incorrect.

[dmethvin]

Yep, the error message is accurate, sorry that older versions allowed incorrect syntax.

[gibson042]

Duplicate of #12643.