Number对象的Number.NEGATIVE_INFINITY属性表示负无穷大值。
它的语法如下
Number.NEGATIVE_INFINITY
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
var result = Number.NEGATIVE_INFINITY;
document.write("Negative infinity value: " + result);
</script>
</body>
</html>输出结果
Negative infinity value: -Infinity