js16进制Unicode编码与中⽂相互转换<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<script language=javascript>
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:
out += str.charAt(i-1);
break;
case 12: case 13:
char2 = str.charCodeAt(i++);
out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
break;
case 14:
char2 = str.charCodeAt(i++);
char3 = str.charCodeAt(i++);
out += String.fromCharCode(((c & 0x0F) << 12) |
((char2 & 0x3F) << 6) |
((char3 & 0x3F) << 0));
break;
}
}
return out;
}
中文字符unicode查询document.writeln(utf8to16(unescape("%E4%BD%A0%E5%A5%BD")));
document.writeln("%E4%BD%A0%E5%A5%BD");
document.writeln(escape("你好"));
document.writeln(encodeURI("你好"));
document.writeln(encodeURIComponent("你好"));
</script>
</HEAD>
<BODY>
</BODY>
</HTML>

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