代碼如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>10進(jìn)制<-->2進(jìn)制</title>
</head>
<body>
Decimal:
<input type="text" id="decimal" />
<input type="button" value="to Binary" onclick="return toBinary();" /> <br />
Binary:
<input type="text" id="binary" />
<input type="button" value="to Decimal" onclick="return toDecimal();" />
<script type="text/javascript">
var d = document.getElementById('decimal');
var b = document.getElementById('binary');
function toBinary() {
var num = d.value;
if (isNaN(num) || !num) {
d.value = "";
return false;
}
b.value = (parseInt(num)).toString(2);
}
function toDecimal() {
var num = b.value;
if (isNaN(num) || !num) {
b.value = "";
return false;
}
d.value = parseInt(num, 2);
}
</script>
</body>
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