描述
This is a special numeric value representing a value less than Number.MIN_VALUE. This value is represented as "-Infinity". It resembles an infinity in its mathematical behavior. For example, anything multiplied by NEGATIVE_INFINITY is NEGATIVE_INFINITY, and anything divided by NEGATIVE_INFINITY is zero.
因为负无穷大是一个常量,所以它是number的只读属性。
语法
使用负无穷大的语法如下所示:−
var val=Number.NEGATIVE_INFINITY;
举例
尝试以下示例。
<html>
<head>
<script type="text/javascript">
<!--
function showValue() {
var smallNumber=(-Number.MAX_VALUE) * 2
if (smallNumber == Number.NEGATIVE_INFINITY) {
alert("Value of smallNumber : " + smallNumber );
}
}
//-->
</script>
</head>
<body>
<p>Click the following to see the result:</p>
<form>
<input type="button" value="Click Me" onclick="showValue();" />
</form>
</body>
</html>
