4 x "SYNTAX_ERR: DOM Exception 12"

[sophiebits]

Getting SYNTAX_ERR: DOM Exception 12 four times every time I start the app.

John's blog suggests that this is a querySelectorAll error. Somehow it doesn't like a selector being used?

http://ejohn.org/blog/thoughts-on-queryselectorall/

I tried to debug this but wasn't very successful without a proper debugger (can't make it happen in desktop Safari). It looks like one of the failures is on div[data-id="main"] > div[data-role="page"]:first but then I can't make the same error when querying that later in the code.

[sophiebits]

The first one to appear is from these lines in jQuery:

try {
    // This should fail with an exception
    // Gecko does not error, returns false instead
    matches.call( document.documentElement, "[test!='']:sizzle" );

} catch( pseudoError ) {
    pseudoWorks = true;
}

I thus conclude that webView:exceptionWasRaised:sourceId:line:forWebFrame: is called for even caught exceptions and so this is (hopefully) not a problem when using the normal UIWebView. Closing.

(The other three errors disappear as well if querySelectorAll is disabled in jQuery, but it's probably the same thing.)

[adamjernst]

Your conclusion is correct.