if (document.getElementById)
{
// DOM対応
}
if (document.implementation.hasFeature('Core', '2.0'))
{
// DOM 2対応
}
if (document.layers)
{
// Netscape 4
}
if (document.all && !document.getElementById)
{
// Internet Explorer 4
}
if (document.all)
{
// Internet Explorer 4以降
}
if (typeof document.documentElement.style.msInterpolationMode != 'undefined')
{
// Internet Explorer 7
}Internet Explorerのバージョン等は条件コンパイルを使ってもっと詳細に得られる：
/*@cc_on @*/
/*@if (@_jscript_version >= 4)
alert("JScriptバージョン4以降です。");
@else @*/
alert("JScriptバージョン3以前です。");
/*@end @*/またInternet Explorerかそうでないかは次の一行で判別できる：
var isMSIE = /*@cc_on!@*/false;foo-bar-bazのような文字列をfooBarBazという文字列に変換する関数：
function camelize(s)
{
return s.replace(/[^\w]+([\w])?/g, function(match, s)
{
return s ? s.toUpperCase() : '';
});
}String.prototype.crc16 = function ()
{
var table = new Array(256);
for (var i = 0; i < 256; ++i)
{
var c = i;
c = (c & 1) ? (0x8408 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0x8408 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0x8408 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0x8408 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0x8408 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0x8408 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0x8408 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0x8408 ^ (c >>> 1)) : (c >>> 1);
table[i] = c;
}
var crc = 0xFFFF;
for (var i = 0, j = this.length; i < j; ++i)
{
var n = this.charCodeAt(i);
var a = new Array;
do
{
a[a.length] = n & 0xFF;
}
while (n >>>= 8) ;
for (var k = 0, l = a.length; k < l; ++k)
{
crc = table[(crc ^ a[k]) & 0xFF] ^ (crc >>> 8);
}
}
return crc;
}String.prototype.crc32 = function ()
{
var table = new Array(256);
for (var i = 0; i < 256; ++i)
{
var c = i;
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
table[i] = c;
}
var crc = 0xFFFFFFFF;
for (var i = 0, j = this.length; i < j; ++i)
{
var n = this.charCodeAt(i);
var a = new Array;
do
{
a[a.length] = n & 0xFF;
}
while (n >>>= 8) ;
for (var k = 0, l = a.length; k < l; ++k)
{
crc = table[(crc ^ a[k]) & 0xFF] ^ (crc >>> 8);
}
}
crc = ~crc;
return crc;
}String.prototype.adler32 = function ()
{
var a = 0x00000000;
var b = 0x00000001;
for (var i = 0, j = this.length; i < j; ++i)
{
var x = this.charCodeAt(i);
var y = x & 0x000000FF;
var z = (x & 0x0000FF00) >> 8;
b = (b + y) % 0x0000FFF1;
a = (a + b) % 0x0000FFF1;
b = (b + z) % 0x0000FFF1;
a = (a + b) % 0x0000FFF1;
}
return (a << 16) + b;
}String.prototype.md5 = function ()
{
var sz = 8; // bits per input character. 8 - ASCII; 16 - Unicode
var table = '0123456789ABCDEF';
function add(x, y)
{
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
function rol(num, cnt)
{
return (num << cnt) | (num >>> (32 - cnt));
}
function FF(a, b, c, d, x, s, t)
{
return add(rol(add(add(a, (b & c) | (~b & d)), add(x, t)), s), b);
}
function GG(a, b, c, d, x, s, t)
{
return add(rol(add(add(a, (b & d) | (c & ~d)), add(x, t)), s), b);
}
function HH(a, b, c, d, x, s, t)
{
return add(rol(add(add(a, b ^ c ^ d), add(x, t)), s), b);
}
function II(a, b, c, d, x, s, t)
{
return add(rol(add(add(a, c ^ (b | ~d)), add(x, t)), s), b);
}
var len = this.length * sz;
var x = new Array((len >> 5) + 1).fill(0);
var mask = (1 << sz) - 1;
for (var i = 0; i < len; i += sz)
{
x[i >> 5] |= (this.charCodeAt(i / sz) & mask) << (i % 32);
}
x[len >> 5] |= 0x80 << (len % 32);
x[((len + 64 >>> 9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for (var i = 0, j = x.length; i < j; i += 16)
{
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = FF(a, b, c, d, x[i], 7, -680876936);
d = FF(d, a, b, c, x[i + 1] || 0, 12, -389564586);
c = FF(c, d, a, b, x[i + 2] || 0, 17, 606105819);
b = FF(b, c, d, a, x[i + 3] || 0, 22, -1044525330);
a = FF(a, b, c, d, x[i + 4] || 0, 7, -176418897);
d = FF(d, a, b, c, x[i + 5] || 0, 12, 1200080426);
c = FF(c, d, a, b, x[i + 6] || 0, 17, -1473231341);
b = FF(b, c, d, a, x[i + 7] || 0, 22, -45705983);
a = FF(a, b, c, d, x[i + 8] || 0, 7, 1770035416);
d = FF(d, a, b, c, x[i + 9] || 0, 12, -1958414417);
c = FF(c, d, a, b, x[i + 10] || 0, 17, -42063);
b = FF(b, c, d, a, x[i + 11] || 0, 22, -1990404162);
a = FF(a, b, c, d, x[i + 12] || 0, 7, 1804603682);
d = FF(d, a, b, c, x[i + 13] || 0, 12, -40341101);
c = FF(c, d, a, b, x[i + 14] || 0, 17, -1502002290);
b = FF(b, c, d, a, x[i + 15] || 0, 22, 1236535329);
a = GG(a, b, c, d, x[i + 1] || 0, 5, -165796510);
d = GG(d, a, b, c, x[i + 6] || 0, 9, -1069501632);
c = GG(c, d, a, b, x[i + 11] || 0, 14, 643717713);
b = GG(b, c, d, a, x[i], 20, -373897302);
a = GG(a, b, c, d, x[i + 5] || 0, 5, -701558691);
d = GG(d, a, b, c, x[i + 10] || 0, 9, 38016083);
c = GG(c, d, a, b, x[i + 15] || 0, 14, -660478335);
b = GG(b, c, d, a, x[i + 4] || 0, 20, -405537848);
a = GG(a, b, c, d, x[i + 9] || 0, 5, 568446438);
d = GG(d, a, b, c, x[i + 14] || 0, 9, -1019803690);
c = GG(c, d, a, b, x[i + 3] || 0, 14, -187363961);
b = GG(b, c, d, a, x[i + 8] || 0, 20, 1163531501);
a = GG(a, b, c, d, x[i + 13] || 0, 5, -1444681467);
d = GG(d, a, b, c, x[i + 2] || 0, 9, -51403784);
c = GG(c, d, a, b, x[i + 7] || 0, 14, 1735328473);
b = GG(b, c, d, a, x[i + 12] || 0, 20, -1926607734);
a = HH(a, b, c, d, x[i + 5] || 0, 4, -378558);
d = HH(d, a, b, c, x[i + 8] || 0, 11, -2022574463);
c = HH(c, d, a, b, x[i + 11] || 0, 16, 1839030562);
b = HH(b, c, d, a, x[i + 14] || 0, 23, -35309556);
a = HH(a, b, c, d, x[i + 1] || 0, 4, -1530992060);
d = HH(d, a, b, c, x[i + 4] || 0, 11, 1272893353);
c = HH(c, d, a, b, x[i + 7] || 0, 16, -155497632);
b = HH(b, c, d, a, x[i + 10] || 0, 23, -1094730640);
a = HH(a, b, c, d, x[i + 13] || 0, 4, 681279174);
d = HH(d, a, b, c, x[i], 11, -358537222);
c = HH(c, d, a, b, x[i + 3] || 0, 16, -722521979);
b = HH(b, c, d, a, x[i + 6] || 0, 23, 76029189);
a = HH(a, b, c, d, x[i + 9] || 0, 4, -640364487);
d = HH(d, a, b, c, x[i + 12] || 0, 11, -421815835);
c = HH(c, d, a, b, x[i + 15] || 0, 16, 530742520);
b = HH(b, c, d, a, x[i + 2] || 0, 23, -995338651);
a = II(a, b, c, d, x[i], 6, -198630844);
d = II(d, a, b, c, x[i + 7] || 0, 10, 1126891415);
c = II(c, d, a, b, x[i + 14] || 0, 15, -1416354905);
b = II(b, c, d, a, x[i + 5] || 0, 21, -57434055);
a = II(a, b, c, d, x[i + 12] || 0, 6, 1700485571);
d = II(d, a, b, c, x[i + 3] || 0, 10, -1894986606);
c = II(c, d, a, b, x[i + 10] || 0, 15, -1051523);
b = II(b, c, d, a, x[i + 1] || 0, 21, -2054922799);
a = II(a, b, c, d, x[i + 8] || 0, 6, 1873313359);
d = II(d, a, b, c, x[i + 15] || 0, 10, -30611744);
c = II(c, d, a, b, x[i + 6] || 0, 15, -1560198380);
b = II(b, c, d, a, x[i + 13] || 0, 21, 1309151649);
a = II(a, b, c, d, x[i + 4] || 0, 6, -145523070);
d = II(d, a, b, c, x[i + 11] || 0, 10, -1120210379);
c = II(c, d, a, b, x[i + 2] || 0, 15, 718787259);
b = II(b, c, d, a, x[i + 9] || 0, 21, -343485551);
a = add(a, olda);
b = add(b, oldb);
c = add(c, oldc);
d = add(d, oldd);
}
var x = [a, b, c, d];
var result = '';
for (var i = 0; i < 16; ++i)
{
result += table.charAt((x[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF)
+ table.charAt((x[i >> 2] >> ((i % 4) * 8)) & 0xF);
}
return result;
}String.prototype.sha1 = function ()
{
var sz = 8; // bits per input character. 8 - ASCII; 16 - Unicode
var table = '0123456789ABCDEF';
function add(x, y)
{
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
function rol(num, cnt)
{
return (num << cnt) | (num >>> (32 - cnt));
}
var len = this.length * sz;
var x = new Array((len >> 5) + 1).fill(0);
var mask = (1 << sz) - 1;
for (var i = 0; i < len; i += sz)
{
x[i >> 5] |= (this.charCodeAt(i / sz) & mask) << (32 - sz - i % 32);
}
x[len >> 5] |= 0x80 << (24 - len % 32);
x[((len + 64 >> 9) << 4) + 15] = len;
var w = Array(80);
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
var e = -1009589776;
for (var i = 0, j = x.length; i < j; i += 16)
{
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
var olde = e;
for (var k = 0; k < 80; ++k)
{
if (k < 16)
{
w[k] = x[i + k];
}
else
{
w[k] = rol(w[k - 3] ^ w[k - 8] ^ w[k - 14] ^ w[k - 16], 1);
}
var ft = k < 20 ? (b & c) | (~b & d)
: k < 40 ? b ^ c ^ d
: k < 60 ? (b & c) | (b & d) | (c & d)
: b ^ c ^ d;
var kt = k < 20 ? 1518500249
: k < 40 ? 1859775393
: k < 60 ? -1894007588
: -899497514;
var f = add(add(rol(a, 5), ft), add(add(e, w[k]), kt));
e = d;
d = c;
c = rol(b, 30);
b = a;
a = f;
}
a = add(a, olda);
b = add(b, oldb);
c = add(c, oldc);
d = add(d, oldd);
e = add(e, olde);
}
var x = [a, b, c, d, e];
var result = '';
for (var i = 0; i < 20; ++i)
{
result += table.charAt((x[i >> 2] >> ((3 - i % 4) * 8 + 4)) & 0xF)
+ table.charAt((x[i >> 2] >> ((3 - i % 4) * 8)) & 0xF);
}
return result;
}String.prototype.base64_encode = function ()
{
var table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
var result = '';
var i = 0;
while (i < this.length)
{
var x = this.charCodeAt(i++);
var y = this.charCodeAt(i++);
var z = this.charCodeAt(i++);
var a = x >> 2;
var b = ((x & 3) << 4) | (y >> 4);
var c = ((y & 15) << 2) | (z >> 6);
var d = z & 63;
if (isNaN(y))
{
c = d = 64;
}
else if (isNaN(z))
{
d = 64;
}
result += table.charAt(a) + table.charAt(b)
+ table.charAt(c) + table.charAt(d);
}
return result;
}
String.prototype.base64_decode = function ()
{
var table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
var result = '';
var i = 0;
while (i < this.length)
{
var a = table.indexOf(this.charAt(i++));
var b = table.indexOf(this.charAt(i++));
var c = table.indexOf(this.charAt(i++));
var d = table.indexOf(this.charAt(i++));
var x = (a << 2) | (b >> 4);
var y = ((b & 15) << 4) | (c >> 2);
var z = ((c & 3) << 6) | d;
result += String.fromCharCode(x);
if (c != 64)
{
result += String.fromCharCode(y);
}
if (d != 64)
{
result += String.fromCharCode(z);
}
}
return result;
}