ASCII 码转换器

2008-10-02 10:50:00 | 【大中小】

从键盘输入任意字符，该脚本可以转换成相应的十进制、十六进制和二进制编码

第一步：
在<head>区添加以下内容

<SCRIPT LANGUAGE="JavaScript">

        /*****************************************************
         *  Share JavaScript (http://www.ShareJS.com)
         * 使用此脚本程序，请保留此声明
         * 获取此脚本以及更多的JavaScript程序，请访问 http://www.ShareJS.com
         ******************************************************/
    
<!-- Begin
binary_numbers = new Array("0000", "0001", "0010", "0011", "0100", "0101", 
"0110", "0111", "1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111");

function toBinary(High, Low) {
var hiHex = "ABCDEF";
if (Low < 10 ) {
LowNib = Low;
}
else {
LowNib = 10 + hiHex.indexOf(Low); 
}
if (High  < 10 ) {
HighNib = High;
}
else {
HighNib = 10 + hiHex.indexOf(High);
}
eight_bits = binary_numbers[HighNib] + " " + binary_numbers[LowNib];
return eight_bits;
}
function Dec2Hex(Decimal) {
var hexChars = "0123456789ABCDEF";
var a = Decimal % 16;
var b = (Decimal - a)/16;
hex = "" + hexChars.charAt(b) + hexChars.charAt(a);
L = hexChars.charAt(a);
H = hexChars.charAt(b);
return hex;
}
var symbols = " !\"#$%&'()*+'-./0123456789:;<=>?@";
function toAscii ()  {
var loAZ = "abcdefghijklmnopqrstuvwxyz";
symbols+= loAZ.toUpperCase();
symbols+= "[\\]^_`";
symbols+= loAZ;
symbols+= "{|}~";
var loc;
loc = symbols.indexOf(document.asciiform.Input.value);
if (loc >-1) { 
Ascii_Decimal = 32 + loc;
return (32 + loc);
   }
return(0);  // If not in range 32-126 return ZERO
}
function getAscii(some_value) {
document.asciiform.toDec.value = toAscii();
document.asciiform.toHex.value = Dec2Hex(toAscii()); 
document.asciiform.binary.value = toBinary(H, L); 
}
//  End -->
</script>

第二步：
在<body>区添加以下内容


<center>
<form name="asciiform" onsubmit="return false;">
<table border=1><tr><td>
<center>
请输入字符:  <input size=1 name=Input maxlength=1 onChange="getAscii(this.value)">
<p>
<input type=button  value="display" onClick="document.asciiform.toDec.value=toAscii()">
</center>
<p>
<input size=10 name=toDec onFocus="this.blur()"> ASCII十进制输出<br>
<input size=10 name=toHex onFocus="this.blur()"> ASCII十六进制输出<br>
<input size=10 name=binary onFocus="this.blur()"> ASCII二进制输出
</td>
</tr>
</table>
</form>
</center>

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