urlencode编码与urldecode解码
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<script type="text/javascript"><!--
function urlEncode(str)
{
var ret = "";
var strSpecial = "!\"#$%&’()*+,/:;<=>?[]^`{|}~%";
var tt = "";
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;
}
-->
</script>
