Javascirpt 加密解密

来源：互联网发布：淘宝提交订单快捷键编辑：程序博客网时间：2024/06/11 17:25

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>无标题文档</title>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
</head>

<body>
<script language="javascript">
a=62;
function encode() {
var code = document.getElementById('code').value;
code = code.replace(/[/r/n]+/g, '');
code = code.replace(/'/g, "//'");
var tmp = code.match(//b(/w+)/b/g);
tmp.sort();
var dict = [];
var i, t = '';
for(var i=0; i<tmp.length; i++) {
if(tmp[i] != t) dict.push(t = tmp[i]);
}
var len = dict.length;
var ch;
for(i=0; i<len; i++) {
ch = num(i);
code = code.replace(new RegExp('//b'+dict[i]+'//b','g'), ch);
if(ch == dict[i]) dict[i] = '';
}
document.getElementById('code').value = "eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)d[e(c)]=k[c]||e(c);k=[function(e){return d[e]}];e=function(){return'////w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('////b'+e(c)+'////b','g'),k[c]);return p}("
+ "'"+code+"',"+a+","+len+",'"+ dict.join('|')+"'.split('|'),0,{}))";

}
function num(c) {
return(c<a?'':num(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36));
}
function run() {
eval(document.getElementById('code').value);
}
function decode() {
var code = document.getElementById('code').value;
code = code.replace(/^eval/, '');
document.getElementById('code').value = eval(code);
}
</script>
<form>
<textarea id=code cols=80 rows=20>
</textarea><br>
<input type=button onclick=encode() value=编码>
<input type=button onclick=run() value=执行>
<input type=button onclick=decode() value=解码>
</form>
</body>
</html>