js编码base64,url参数编码
2013-10-23 06:51
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<script>
//alert('内容包含html代码,form提交后,即使是post方式,也会引起内容截断,甚至是后台获取参数失败!');
function enchtml(htmlstr)
{
var s=htmlstr;
s = s.replace(/[&]/gi, "@﹠");
s = s.replace(/[%]/gi, "@﹪");
s = s.replace(/[+]/gi, "@﹢");
s = s.replace(/[\']/gi,"@‘");
s = s.replace(/[\"]/gi, "@”");
s = s.replace(/[?]/gi, "@?");
s = s.replace(/[<]/gi, "@〈");
s = s.replace(/[>]/gi, "@〉");
s = s.replace(/[\\]/gi, "@﹨");
s = s.replace(/[\/]/gi, "@∕");
return s;
}
function dechtml(htmlstr)
{
var s=htmlstr;
s = s.replace(/(@﹠)/g, "&");
s = s.replace(/(@﹪)/gi, "%");
s = s.replace(/(@﹢)/gi, "+");
s = s.replace(/(@‘)/gi,"'");
s = s.replace(/(@”)/gi, "\"");
s = s.replace(/(@?)/gi, "?");
s = s.replace(/(@〈)/gi, "<");
s = s.replace(/(@〉)/gi, ">");
s = s.replace(/(@﹨)/gi, "\\");
s = s.replace(/(@∕)/gi, "/");
return s;
}
</script>
<script>
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_="; //alert('自定义base64');
var base64chk = /[^A-Za-z0-9-_\=]/g; //!!!alert('替换非法字符') = /[^A-Za-z0-9\+\/\=]/g;
function encode64(input)
{
var output = "";
var chr1, chr2, chr3 = "";
var enc1, enc2, enc3, enc4 = "";
var i = 0;
do
{
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2))
{
enc3 = enc4 = 64;
}
else if (isNaN(chr3))
{
enc4 = 64;
}
output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2)
+ keyStr.charAt(enc3) + keyStr.charAt(enc4);
chr1 = chr2 = chr3 = "";
enc1 = enc2 = enc3 = enc4 = "";
}while (i < input.length);
return output;
}
//将Base64编码字符串转换成Ansi编码的字符串
function decode64(input)
{
var output = "";
var chr1, chr2, chr3 = "";
var enc1, enc2, enc3, enc4 = "";
var i = 0;
if (input.length % 4 != 0)
{
return "";
}
if (base64chk.exec(input))
{
return "";
}
do
{
enc1 = keyStr.indexOf(input.charAt(i++));
enc2 = keyStr.indexOf(input.charAt(i++));
enc3 = keyStr.indexOf(input.charAt(i++));
enc4 = keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64)
{
output += String.fromCharCode(chr2);
}
if (enc4 != 64)
{
output += String.fromCharCode(chr3);
}
chr1 = chr2 = chr3 = "";
enc1 = enc2 = enc3 = enc4 = "";
} while (i < input.length);
return output;
}
function utf16to8(str)
{
var out, i, len, c;
out = "";
len = str.length;
for(i = 0; i < len; i++)
{
c = str.charCodeAt(i);
if ((c >= 0x0001) && (c <= 0x007F)) //<=127
{
out += str.charAt(i);
}
else if (c > 0x07FF) //>2047
{
out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
}
else
{
out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
}
}
return out;
}
function utf8to16(str)
{
var out, i, len, c;
var char2, char3;
out = "";
len = str.length;
i = 0;
while(i < len)
{
c = str.charCodeAt(i++);
switch(c >> 4)
{
case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
// 0xxxxxxx
out += str.charAt(i-1);
break;
case 12: case 13:
// 110x xxxx 10xx xxxx
char2 = str.charCodeAt(i++);
out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
break;
case 14:
// 1110 xxxx 10xx xxxx 10xx xxxx
char2 = str.charCodeAt(i++);
char3 = str.charCodeAt(i++);
out += String.fromCharCode(((c & 0x0F) << 12) |
((char2 & 0x3F) << 6) |
((char3 & 0x3F) << 0));
break;
}
}
return out;
}
// 测试代码 开始
//var tt='升级解决方案.doc';
//var de = encode64(utf16to8(tt));
//alert(de);
//var ee = utf8to16(decode64(de))
//alert(ee);
</script>
//alert('内容包含html代码,form提交后,即使是post方式,也会引起内容截断,甚至是后台获取参数失败!');
function enchtml(htmlstr)
{
var s=htmlstr;
s = s.replace(/[&]/gi, "@﹠");
s = s.replace(/[%]/gi, "@﹪");
s = s.replace(/[+]/gi, "@﹢");
s = s.replace(/[\']/gi,"@‘");
s = s.replace(/[\"]/gi, "@”");
s = s.replace(/[?]/gi, "@?");
s = s.replace(/[<]/gi, "@〈");
s = s.replace(/[>]/gi, "@〉");
s = s.replace(/[\\]/gi, "@﹨");
s = s.replace(/[\/]/gi, "@∕");
return s;
}
function dechtml(htmlstr)
{
var s=htmlstr;
s = s.replace(/(@﹠)/g, "&");
s = s.replace(/(@﹪)/gi, "%");
s = s.replace(/(@﹢)/gi, "+");
s = s.replace(/(@‘)/gi,"'");
s = s.replace(/(@”)/gi, "\"");
s = s.replace(/(@?)/gi, "?");
s = s.replace(/(@〈)/gi, "<");
s = s.replace(/(@〉)/gi, ">");
s = s.replace(/(@﹨)/gi, "\\");
s = s.replace(/(@∕)/gi, "/");
return s;
}
</script>
<script>
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_="; //alert('自定义base64');
var base64chk = /[^A-Za-z0-9-_\=]/g; //!!!alert('替换非法字符') = /[^A-Za-z0-9\+\/\=]/g;
function encode64(input)
{
var output = "";
var chr1, chr2, chr3 = "";
var enc1, enc2, enc3, enc4 = "";
var i = 0;
do
{
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2))
{
enc3 = enc4 = 64;
}
else if (isNaN(chr3))
{
enc4 = 64;
}
output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2)
+ keyStr.charAt(enc3) + keyStr.charAt(enc4);
chr1 = chr2 = chr3 = "";
enc1 = enc2 = enc3 = enc4 = "";
}while (i < input.length);
return output;
}
//将Base64编码字符串转换成Ansi编码的字符串
function decode64(input)
{
var output = "";
var chr1, chr2, chr3 = "";
var enc1, enc2, enc3, enc4 = "";
var i = 0;
if (input.length % 4 != 0)
{
return "";
}
if (base64chk.exec(input))
{
return "";
}
do
{
enc1 = keyStr.indexOf(input.charAt(i++));
enc2 = keyStr.indexOf(input.charAt(i++));
enc3 = keyStr.indexOf(input.charAt(i++));
enc4 = keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64)
{
output += String.fromCharCode(chr2);
}
if (enc4 != 64)
{
output += String.fromCharCode(chr3);
}
chr1 = chr2 = chr3 = "";
enc1 = enc2 = enc3 = enc4 = "";
} while (i < input.length);
return output;
}
function utf16to8(str)
{
var out, i, len, c;
out = "";
len = str.length;
for(i = 0; i < len; i++)
{
c = str.charCodeAt(i);
if ((c >= 0x0001) && (c <= 0x007F)) //<=127
{
out += str.charAt(i);
}
else if (c > 0x07FF) //>2047
{
out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
}
else
{
out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
}
}
return out;
}
function utf8to16(str)
{
var out, i, len, c;
var char2, char3;
out = "";
len = str.length;
i = 0;
while(i < len)
{
c = str.charCodeAt(i++);
switch(c >> 4)
{
case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
// 0xxxxxxx
out += str.charAt(i-1);
break;
case 12: case 13:
// 110x xxxx 10xx xxxx
char2 = str.charCodeAt(i++);
out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
break;
case 14:
// 1110 xxxx 10xx xxxx 10xx xxxx
char2 = str.charCodeAt(i++);
char3 = str.charCodeAt(i++);
out += String.fromCharCode(((c & 0x0F) << 12) |
((char2 & 0x3F) << 6) |
((char3 & 0x3F) << 0));
break;
}
}
return out;
}
// 测试代码 开始
//var tt='升级解决方案.doc';
//var de = encode64(utf16to8(tt));
//alert(de);
//var ee = utf8to16(decode64(de))
//alert(ee);
</script>
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