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kenji0x02/gist:5678544

Created May 30, 2013 15:02
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javascriptでundefinedの判定。いろいろあるけど、、、
Raw
gistfile1.js
// http://blog.tojiru.net/article/205007468.html
if (a == null) {
alert("aはundefinedかnull");
}
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