ID selector fail with ':' in the id

[darrenrh@…]

IDs with ':' aren't found by the ID selector. Using HTML5 so IDs should be valid with a number first.

It works in Pure JS and in at least one other framework, Mootools 1.4.5.

​http://jsfiddle.net/Ax3rP/4/

Converting a small project from mootools 1.4.5 to jquery 1.10.2 and it caused me a lot of confusion

[timmywil]

The colon must be escaped: ​http://jsfiddle.net/Ax3rP/6/.

Always escape selectors as if you were passing them to querySelectorAll, not getElementById. jQuery will normalize the selector for you and still use getElementbyId internally for performance.

​http://api.jquery.com/id-selector/