Syntax error, unrecognized expression with whitespace

[daniel@…]

If you do an insertAfter, or even an appendTo for that matter, with an HTML string that has whitespace (tabbed whitespace), you get an error: "Syntax error, unrecognized expression".

This can be remedied by executing jQuery.trim onto the HTML string, but this never used to break in earlier versions of jQuery like v1.7.2. Only the new release v1.9.0. You shouldn't need to do jQuery trim. So older code breaks with zero changes.

Example: ​http://jsfiddle.net/6XTk2/

[anonymous]

Please see an even more powerful and simple example -> ​http://jsfiddle.net/6XTk2/2/

It just has one simple tab of whitespace.

Replying to daniel@…:

If you do an insertAfter, or even an appendTo for that matter, with an HTML string that has whitespace (tabbed whitespace), you get an error: "Syntax error, unrecognized expression".

This can be remedied by executing jQuery.trim onto the HTML string, but this never used to break in earlier versions of jQuery like v1.7.2. Only the new release v1.9.0. You shouldn't need to do jQuery trim. So older code breaks with zero changes.

Example: ​http://jsfiddle.net/6XTk2/

[anonymous]

Sorry, another update. But this is even worse, it's not even tabbed whitespace, it's ANY whitespace.

A even more powerful example -> ​http://jsfiddle.net/6XTk2/2/

[daniel@…]

The last link should be ​http://jsfiddle.net/6XTk2/3/

[dmethvin]

Yes, that's documented in the upgrade guide. By far, the most common situation where whitespace may appear is when processing an HTML template. For those cases, use $.parseHTML to specify (for both your sake and the sake of anyone else reading the code) whether you intend for scripts to be run in the incoming HTML.

[dmethvin]

#13408 is a duplicate of this ticket.

[CodedMonkey]

Replying to dmethvin:

Yes, that's documented in the upgrade guide. By far, the most common situation where whitespace may appear is when processing an HTML template. For those cases, use $.parseHTML to specify (for both your sake and the sake of anyone else reading the code) whether you intend for scripts to be run in the incoming HTML.

Why is this documented in the changelogs but not in the normal documentation?