<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>js加密</title> </head> <body> <script> var str = "alert('hello js')"; eval(jsEncode(str)); /** * 加密函数 * @param text 加密的内容 * @param gv 加密token * @returns {string|string} 加密后的内容 */ function jsEncode(text, gv = 'Yang') { var r = ""; var n; var t; var b = ["___", "__$", "_$_", "_$$", "$__", "$_$", "$$_", "$$$", "$___", "$__$", "$_$_", "$_$$", "$$__", "$$_$", "$$$_", "$$$$",]; var s = ""; for (var i = 0; i < text.length; i++) { n = text.charCodeAt(i); if (n == 0x22 || n == 0x5c) { s += "\\\" + text.charAt(i).toString(16); } else if ((0x21 <= n && n <= 0x2f) || (0x3A <= n && n <= 0x40) || (0x5b <= n && n <= 0x60) || (0x7b <= n && n <= 0x7f)) { //}else if( (0x20 <= n && n <= 0x2f) || (0x3A <= n == 0x40) || ( 0x5b <= n && n <= 0x60 ) || ( 0x7b <= n && n <= 0x7f ) ){ s += text.charAt(i); } else if ((0x30 <= n && n <= 0x39) || (0x61 <= n && n <= 0x66)) { if (s) r += """ + s + ""+"; r += gv + "." + b[n < 0x40 ? n - 0x30 : n - 0x57] + "+"; s = ""; } else if (n == 0x6c) { // 'l' if (s) r += """ + s + ""+"; r += "(![]+"")[" + gv + "._$_]+"; s = ""; } else if (n == 0x6f) { // 'o' if (s) r += """ + s + ""+"; r += gv + "._$+"; s = ""; } else if (n == 0x74) { // 'u' if (s) r += """ + s + ""+"; r += gv + ".__+"; s = ""; } else if (n == 0x75) { // 'u' if (s) r += """ + s + ""+"; r += gv + "._+"; s = ""; } else if (n < 128) { if (s) r += """ + s; else r += """; r += "\\"+" + n.toString(8).replace(/[0-7]/g, function (c) { return gv + "." + b[c] + "+" }); s = ""; } else { if (s) r += """ + s; else r += """; r += "\\"+" + gv + "._+" + n.toString(16).replace(/[0-9a-f]/gi, function (c) { return gv + "." + b[parseInt(c, 16)] + "+" }); s = ""; } } if (s) r += """ + s + ""+"; r = gv + "=~[];" + gv + "={___:++" + gv + ",$$$$:(![]+"")[" + gv + "],__$:++" + gv + ",$_$_:(![]+"")[" + gv + "],_$_:++" + gv + ",$_$$:({}+"")[" + gv + "],$$_$:(" + gv + "[" + gv + "]+"")[" + gv + "],_$$:++" + gv + ",$$$_:(!""+"")[" + gv + "],$__:++" + gv + ",$_$:++" + gv + ",$$__:({}+"")[" + gv + "],$$_:++" + gv + ",$$$:++" + gv + ",$___:++" + gv + ",$__$:++" + gv + "};" + gv + ".$_=" + "(" + gv + ".$_=" + gv + "+"")[" + gv + ".$_$]+" + "(" + gv + "._$=" + gv + ".$_[" + gv + ".__$])+" + "(" + gv + ".$$=(" + gv + ".$+"")[" + gv + ".__$])+" + "((!" + gv + ")+"")[" + gv + "._$$]+" + "(" + gv + ".__=" + gv + ".$_[" + gv + ".$$_])+" + "(" + gv + ".$=(!""+"")[" + gv + ".__$])+" + "(" + gv + "._=(!""+"")[" + gv + "._$_])+" + gv + ".$_[" + gv + ".$_$]+" + gv + ".__+" + gv + "._$+" + gv + ".$;" + gv + ".$$=" + gv + ".$+" + "(!""+"")[" + gv + "._$$]+" + gv + ".__+" + gv + "._+" + gv + ".$+" + gv + ".$$;" + gv + ".$=(" + gv + ".___)[" + gv + ".$_][" + gv + ".$_];" + gv + ".$(" + gv + ".$(" + gv + ".$$+"\""+" + r + ""\"")())();"; return r; } </script> </body> </html>
加密后的内容：
