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Jacob Seidelin is up to more tricks, this time playing with the binary
side of life and writing a library that can reading
ID3 tags from MP3 files and such.
JAVASCRIPT:
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//
URL of the mp3 file (must be on the same domain!)
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var file = "mymusicfile.mp3"
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//
define your own callback function
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function mycallback() {
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// either call the ID3.getAllTags([file]) function which returns
an object holding all the tags
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alert(
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"All tags in
this file: " + ID3.getAllTags(file).toSource()
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)
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// or call ID3.getTag([file], [tag]) to get a specific
tag
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alert(
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"Title: "
+ ID3.getTag(file, "title") + " by artist:
" + ID3.getTag(file, "artist")
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)
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}
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ID3.loadTags(file, mycallback)
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You can view a demo at
work or download the
code.
Of course, Jacob realises that this doesn't make sense for many use
cases:
Of course, one big disadvantage of doing this on the client in JavaScript
is that the you need to download the entire MP3 file before the tags are
available, so it might be better to stick to server-side solutions in many
cases if all you need is the tag info.
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