IE7: Error thrown on every click when using jquery-ujs

[markbao]

Problem: When using jquery-ujs, clicking anything (link or not) in the document results in a "Wrong number of arguments or invalid property assignment" error in IE7. This results in click-bound actions (such as data-method) failing to work.

It refers to the following code in jquery.js but only throws that error when jquery-ujs is used:

// Support: IE<8
// Prevent attribute/property "interpolation"
// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !assert(function( div ) {
    div.innerHTML = "<a href='#'></a>";
    return div.firstChild.getAttribute("href") === "#" ;
}) ) {
    addHandle( "type|href|height|width", function( elem, name, isXML ) {
        if ( !isXML ) {
            return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
        }
    });
}

The suspect line that the Microsoft Script Debugger marks is return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );.

Versions:

• jquery-rails 3.1.0
• jQuery 1.11.0
• Internet Explorer 7.0.6002.18005
• Windows Vista SP2 — Microsoft modern.IE VM
• Rails 4.1

Call stack: https://gist.github.com/markbao/11187918 — Interestingly, this bug only elicits itself when ujs is included, but the trace only seems to refer to jquery.js.

[jeremy]

Looks like jquery-ujs is tickling a jquery bug.

Related stuff working around getAttribute specifics:
http://bugs.jquery.com/ticket/10299
http://bugs.jquery.com/ticket/12915

I tried tracing it further, but ended up looking through https://github.com/jquery/sizzle git history. Unclear.