特效千寻－base64编码解码

加入收藏-方便您以后查找网页特效哦

你的位置：主页>>密码特效

base64编码解码

加入如下代码到body区域

<script type="text/javascript"><!--
var keyStr = "ABCDEFGHIJKLMNOP" +
"QRSTUVWXYZabcdef" +
"ghijklmnopqrstuv" +
"wxyz0123456789+/" +
"=";
function encode64(input) {
input = escape(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;
}
function decode64(input) {
var output = "";
var chr1, chr2, chr3 = "";
var enc1, enc2, enc3, enc4 = "";
var i = 0;
// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
  var base64test = /[^A-Za-z0-9\+\/\=]/g;
  if (base64test.exec(input)) {
  alert("There were invalid base64 characters in the input text.\n" +
"Valid base64 characters are A-Z, a-z, 0-9, '+', '/', and '='\n" +
"Expect errors in decoding.");
  }
  input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
  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 = output + String.fromCharCode(chr2);
  }
  if (enc4 != 64) {
  output = output + String.fromCharCode(chr3);
  }
  chr1 = chr2 = chr3 = "";
  enc1 = enc2 = enc3 = enc4 = "";
  } while (i < input.length);
  return unescape(output);
  }
</script>
<form name="base64Form">
<textarea name="theText" cols="40" rows="6"></textarea><br>
<input type="button" name="encode" value="Encode to base64"
  onClick="document.base64Form.theText.value=encode64(document.base64Form.theText.value);">
<input type="button" name="decode" value="Decode from base64" 
  onClick="document.base64Form.theText.value=decode64(document.base64Form.theText.value);">
</form>

	COPYRIGHT © 2003-2005 ALL RIGHTS RESERVED
	业务联系｜广告服务｜网站建设｜关于我们｜免责声明月光宝盒工作室 800*600

我要啦免费统计