Trying to understand this snippet

[Shikkediel]

https://css-tricks.com/snippets/jquery/smooth-scrolling/

Why the elaborate operations at the beginning – is this to prevent code injection to the URL? Wouldn’t using target = $(this).attr('href') instead be a lot more straightforward?

Let me try and ask the source, @chriscoyier. :-)
Thanks in advance for a reply by anyone of course.

Edit – didn’t see the reference page. I’ll read that first…

[Shikkediel]

A bit more insight, wasn’t the first time I came across that snippet. But now realise it has nothing to do with code injection prevention but filtering out the correct anchors. I was preoccupied with the aforementioned because I just read that getting the window.location.hash and using it in jQuery can easily create a vulnerability.

Hmm… apparently this.hash is quicker :

http://jsperf.com/hash-vs-attr-href

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