document.write(Number("0x123"));
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//<![CDATA[ var Oct = 012765;
document.write("Oct(012765): ", Oct, "<p/>");
document.write
(
"fXRadixToDecimal('012765', 8, true): ",
fXRadixToDecimal('012765', 8, true),
"<hr/>"
); var Hex = 0x12765;
document.write("Hex(0x12765): ", 0x12765, "<p/>");
document.write
(
"fXRadixToDecimal('0x12765', 16, true): ",
fXRadixToDecimal('0x12765', 16, true),
"<hr/>"
); var Bin = 110111;
document.write("Bin(110111): ", 55, "<p/>");
document.write
(
"fXRadixToDecimal('110111', 2, true): ",
fXRadixToDecimal('110111', 2, true),
"<hr/>"
); function fXRadixToDecimal(sIpt, iRadix, bDebug)
{// shawl.qiu code : return integer
var Debug = bDebug;
if(!iRadix||/^0x/i.test(sIpt))
{
iRadix = 16;
}
if(iRadix==16)
{
sIpt = sIpt.replace(/^0x/i, "");
}
var Ar = fStringToArray(sIpt);
var iResult = iTemp = 0;
Ar.reverse();
var Len = Ar.length;
while(--Len>=0)
{
switch(iRadix)
{
case 16:
iTemp = fHexMap(Ar[Len]);
break;
default:
iTemp = Ar[Len]-0;
break;
} // end switch
iResult += iTemp*Math.pow(iRadix, Len);
if(Debug)
document.write
(
iTemp,
"*",
Math.pow(iRadix, Len),
"=",
iTemp*Math.pow(iRadix, Len),
"<br/>"
);
} // end while
if(Debug)
document.write("= ",iResult, "<p/>");
return iResult;
function fStringToArray(sIpt)
{// shawl.qiu script
if(!sIpt||sIpt=="") return [];
var Ar = [];
var Len = sIpt.length;
while(--Len>=0)
{
Ar[Len] = sIpt.charAt(Len);
}
return Ar;
} // function fStringToArray1(sIpt)
function fHexMap(IptChar)
{
if(/^[a-f0-9]$/i.test(IptChar)==false)
{
throw new Error("输入字符("+IptChar+")不符合十六进制字符!")
}
switch(IptChar.toLowerCase())
{
case "a": return 10;
case "b": return 11;
case "c": return 12;
case "d": return 13;
case "e": return 14;
case "f": return 15;
default:
return IptChar-0;
}
} // end function fHexMap
} // end function fXRadixToDecimal//]]>
</script>
function hex2dec(hexstr){
var o = {0:0,1:1,2:2,3:3,4:4,5:5,6:6,7:7,8:8,9:9,a:10,b:11,c:12,d:13,e:14,f:15};
var ar = hexstr.replace(/^0x/,"").split("").reverse();
var sum = 0;
for(var i=0,l=ar.length;i<l;i++)
sum += o[ar[i]] * Math.pow(16,i);
return sum;
}document.write(hex2dec("0x1320123af"),"<br>");
document.write(Number("0x1320123af"),"<br>");
如果我心血来潮, 大概会弄个 x 制 转 y 制...<script type="text/javascript">
//<![CDATA[
document.write
(
"fDecimalToXRadix(55, 2, true): "
,fDecimalToXRadix(55, 2, true)
,"<hr/>"
);
document.write
(
"fDecimalToXRadix(5621, 8, true): "
,fDecimalToXRadix(5621, 8, true)
,"<hr/>"
);
document.write
(
"fDecimalToXRadix(75621, 16, true): "
,fDecimalToXRadix(75621, 16, true)
,"<hr/>"
); function fDecimalToXRadix(iDec, iRadix, bDebug)
{// shawl.qiu code : return string;
iDec-=0;
if(iDec===0) return 0;
var NumAr = [];
var iCount = 0;
var Debug = bDebug;
var iMod = 0;
while(iDec>iRadix)
{
iMod = iDec%iRadix;
NumAr[iCount++] = iMod;
iDec = Math.floor(iDec /= iRadix);
if(Debug)
{
document.write("iMod: ", iMod, "<br/>");
document.write("iDec: ", iDec, "<p/>");
}
} // end while
NumAr[iCount] = iDec;
NumAr.reverse();
return NumAr.join("");
if(Debug)
{
document.write("NumAr: ", NumAr, "<p/>");
}
} // end function fDecimalToXRadix(iDec, iRadix, bDebug)
//]]>
</script>
alert(parseInt("FF", 16));
</script>