function fileSizeFormat(size) { var s = size.split(",").join(""); var suf = ( (s.match(/(B|KB|MB|GB|TB)$/gi)||[])[0] || "B" ).toUpperCase(); var num = parseFloat(s.match(new RegExp(/^[0-9]+(\.[0-9]+)?/))[0]); var mul = 1024; switch (suf) { case "B": return num; case "KB": return num _ Math.pow(mul, 1); case "MB": return num _ Math.pow(mul, 2); case "GB": return num _ Math.pow(mul, 3); case "TB": r
![[JavaScript] ファイルサイズを数値に直す関数 | 零弐壱蜂](https://cdn-ak-scissors.b.st-hatena.com/image/square/d983ac13c29e6e959b8682e880a9fe8e1ba572ca/backend=imagemagick;height=288;version=1;width=512/https%3A%2F%2Fproxy.goincop1.workers.dev%3A443%2Fhttps%2Fb.0218.jp%2Fimages%2Fogp%2F20140424142720.jpg%3Fts%3Dfddb2f76291925f9c78eb35a7aed9a03af780740)
