查看效果:js实现url加密,解密

<!--代码来自网络-->

<title>js实现asp中的UrlEncode和UrlDecode--来自网络</title>

<form action="" method="post" name="form">

<input type="text" size="50" name="code" maxlength="100" /><br />

<input type="submit" value="加密解密" />

</form>

<script language="vbscript">

Function str2asc(strstr)

str2asc = hex(asc(strstr))

End Function

Function asc2str(ascasc)

asc2str = chr(ascasc)

End Function

</script>

<script language="javascript">

/*这里开始时UrlEncode和UrlDecode函数*/

function UrlEncode(str){

var ret="";

var strSpecial="!\"#$%&'()*+,/:;<=>?[]^`{|}~%";

for(var i=0;i<str.length;i++){

var chr = str.charAt(i);

var c=str2asc(chr);

//tt+= chr+":"+c+"n";

if(parseInt("0x"+c) > 0x7f){

ret+="%"+c.slice(0,2)+"%"+c.slice(-2);

}else{

if(chr==" ")

ret+="+";

else if(strSpecial.indexOf(chr)!=-1)

ret+="%"+c.toString(16);

else

ret+=chr;

}

}

return ret;

}

function UrlDecode(str){

var ret="";

for(var i=0;i<str.length;i++){

var chr = str.charAt(i);

if(chr == "+"){

ret+=" ";

}else if(chr=="%"){

var asc = str.substring(i+1,i+3);

if(parseInt("0x"+asc)>0x7f){

ret+=asc2str(parseInt("0x"+asc+str.substring(i+4,i+6)));

i+=5;

}else{

ret+=asc2str(parseInt("0x"+asc));

i+=2;

}

}else{

ret+= chr;

}

}

return ret;

}

ss=""

aa=UrlEncode(ss)

bb=UrlDecode(ss)

document.write("编码后"+aa+"<br>");

document.write("解码后:"+bb);

</script>

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