javascript中简单的进制转换代码实例

时间:2020-05-13 人气:0

<!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进制<-->2进制</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>
</html>

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