On 10/19/11 11:17 AM, Boris Zbarsky wrote:
4) Mapping Sizzle("#id") with document a context to
getElementById("id"). This isn't a valid optimization for querySelector
because there can be multiple elements with the same id;
And just as a note, since someone asked me off-list how this can
possibly be true... Given this markup:
<div id="x">
<div id="y"></div>
<div id="y"></div>
</div>
calling
jQuery.find("#y")
returns an array with one element in it while calling
jQuery.find("#y", document.getElementById("x"))
returns an array with two elements. I have no idea whether this is
purposeful behavior or just a bug in Sizzle brought on by the
optimization listed above.
-Boris
