网页压缩、解压
<html> <head> <title>Javascript Compressor</title> <meta http-equiv="Content-Type" content="text/html; charset=GB2312" /> <script type="text/javascript"> function ICommon(that){ if(that!=null){ that.inherit=Common.prototype.inherit; that.specialize=Common.prototype.specialize } return that }; ICommon.specialize=function(p,c){ if(!p)p={}; if(!c)c=p.constructor; if(c=={}.constructor) c=new Function("this.inherit()"); c.valueOf=new Function("return this"); c.valueOf.prototype=new this.valueOf; c.valueOf.prototype.specialize(p); c.prototype=new c.valueOf; c.valueOf.prototype.constructor=c.prototype.constructor=c; c.ancestor=this; c.specialize=arguments.callee; c.ancestorOf=this.ancestorOf; return c }; ICommon.valueOf=new Function("return this"); ICommon.valueOf.prototype={ constructor:ICommon,inherit:function(){ return arguments.callee.caller.ancestor.apply(this,arguments) },specialize:function(that){ if(this==this.constructor.prototype&&this.constructor.specialize){ return this.constructor.valueOf.prototype.specialize(that) } for(var i in that){ switch(i){ case"constructor":case"toString":case"valueOf":continue } if(typeof that[i]=="function"&&that[i]!=this[i]){ that[i].ancestor=this[i] } this[i]=that[i] } if(that.toString!=this.toString&&that.toString!={}.toString){ that.toString.ancestor=this.toString; 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if(/MSIE 5.0/.test(navigator.userAgent)) new function(){ var ap=function(f,o,a){f.apply(o,a)}; if(''.replace(/^/,String)){ var _28=String.prototype.replace; var _29=function(e,r){ var m,n="",s=this; while(s&&(m=e.exec(s))){ n+=s.slice(0,m.index)+ap(r,this,m); s=s.slice(m.lastIndex) } return n+s }; String.prototype.replace=function(e,r){ this.replace=(typeof r=="function")?_29:_28; return this.replace(e,r) } } if(!Function.apply){ var APPLY="apply-"+Number(new Date); ap=function(f,o,a){ var r; o[APPLY]=f; switch(a.length){ case 0:r=o[APPLY]();break; case 1:r=o[APPLY](a[0]);break; case 2:r=o[APPLY](a[0],a[1]);break; case 3:r=o[APPLY](a[0],a[1],a[2]);break; case 4:r=o[APPLY](a[0],a[1],a[2],a[3]);break; default:var aa=[],i=a.length-1;do aa[i]="a["+i+"]";while(i--);eval("r=o[APPLY]("+aa+")") } delete o[APPLY]; return r }; if(typeof ICommon=="function") ICommon.valueOf.prototype.inherit=function(){ return ap(arguments.callee.caller.ancestor,this,arguments) } } if(![].push) Array.prototype.push=function(){ for(var i=0;i<arguments.length;i++){ this[this.length]=arguments[i] } return this.length }; 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function _27(p,k){ var E=_10("e\\(c\\)","g"); p="'"+_5(p)+"'"; var a=Math.min(k.s.length,_0)||1; var c=k.s.length; for(var i in k.p) k.s[i]=""; k="'"+k.s.join("|")+"'.split('|')"; var e=_0>62?_11:_12(a); e=String(e).replace(/_0/g,"a").replace(/arguments\.callee/g,"e"); var i="c"+(a>10?".toString(a)":""); if(_2){ var d=_19(_26); if(_0>62)d=d.replace(/\\\\w/g,"[\\xa1-\\xff]"); else if(a<36)d=d.replace(E,i); if(!c)d=d.replace(_10("(c)\\s*=\\s*1"),"$1=0") } var u=String(_25); if(_2){ u=u.replace(/\{/,"{"+d+";") } u=u.replace(/"/g,"'"); if(_0>62){ u=u.replace(/'\\\\b'\s*\+|\+\s*'\\\\b'/g,"") } if(a>36||_0>62||_2){ u=u.replace(/\{/,"{e="+e+";") }else{ u=u.replace(E,i) } u=pack(u,0,false,true); var p=[p,a,c,k]; if(_2){ p=p.concat(0,"{}") } return"eval("+u+"("+p+"))\n" }; function _12(a){return a>10?a>36?a>62?_11:_22:_23:_24}; var _24=function(c){ return c }; var _23=function(c){ return c.toString(36) }; var _22=function(c){ return(c<_0?'':arguments.callee(parseInt(c/_0)))+((c=c%_0)>35?String.fromCharCode(c+29):c.toString(36)) }; var _11=function(c){ return(c<_0?'':arguments.callee(c/_0))+String.fromCharCode(c%_0+161) }; var _21=function(c){ return"_"+c }; function _5(s){ return s.replace(/([\\'])/g,"\\$1") }; function _20(s){ return s.replace(/[\xa1-\xff]/g,function(m){ return"\\x"+m.charCodeAt(0).toString(16) }) }; function _10(s,f){ return new RegExp(s.replace(/\$/g,"\\$"),f) }; function _19(f){ with(String(f))return slice(indexOf("{")+1,lastIndexOf("}")) }; function _9(r){ return new RegExp(String(r).slice(1,-1),"g") }; _4(_18); if(_8)_4(_17); if(_0)_4(_16); return _15(_7) }; var input,output; onload=function(){ if(!document.getElementById||''.replace(/^/,String))return; input=document.getElementById("input");//内容 文本区域 var message=document.getElementById("message");//消息 var encoding=document.getElementById("ascii-encoding");//编码方式 选择列表 值有0、10、62、95 var fastDecode=document.getElementById("fast-decode");//快速解码 选择框 var specialChars=document.getElementById("special-chars");//特殊字符 选择框 function packScript(){//执行压缩 try{ if(input.value){ input.value=pack(input.value,encoding.value,fastDecode.checked,specialChars.checked); //调用编码函数 输入代码， 编码方式， 是否快速解码， 是否特殊字符 } }catch(e){ reportError("error packing script",e.message) } }; function decodeScript(){//执行解码 try{ if(input.value.substring(0,27)=="eval(function(p,a,c,k,e,d){"){ eval("input.value=String"+input.value.slice(4)); } else reportError("代码解码取消","您的代码没有用此方法压缩！"); }catch(e){ reportError("代码解码错误",e.message) } }; function enableFastDecode(){ fastDecode.disabled=Boolean(encoding.value==0); fastDecode.parentNode.className=(encoding.value==0)?"disabled":"" }; function reportError(m,e){ message.innerHTML=m+(e?": "+e:""); message.className="error" }; encoding.onclick=enableFastDecode; var buttons=document.getElementsByTagName("button"); var button,i; for(i=0;(button=buttons[i]);i++){ var handler=eval(button.id); button.onclick=handler; handler.button=button } }; </script> </head> <body > <form id="packer" action="" method="post"> <label for="input">Paste your code:</label> <br /> <textarea id="input" name="input" rows="10" cols="79"></textarea> <div class="r ar"> <p id="controls"> <label for="ascii-encoding">Encoding:</label> <select id="ascii-encoding" name="ascii_encoding"> <option value="0">None</option> <option value="10">Numeric</option> <option value="62" selected="selected">Normal</option> <option value="95">High ASCII</option> </select><br /> <label for="fast-decode">Fast Decode: <input type="checkbox" id="fast-decode" name="fast_decode" value="1" checked="checked"/></label><br /> <label for="special-chars">Special Characters: <input type="checkbox" id="special-chars" name="special_chars" value="1"/></label> </p> </div> <button type="button" id="packScript">Compress</button> <button type="button" id="decodeScript" >Decode</button> <p id="message"></p> </form> </body> </html> 来自: http://www.cnblogs.com/szw/archive/2007/12/17/1003562.html