Number对象的Number.POSITIVE_INFINITY属性表示正无穷大值。
其语法如下
Number.POSITIVE_INFINITY
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
var result = Number.POSITIVE_INFINITY;
document.write("Positive infinity value: " + result);
</script>
</body>
</html>输出结果
Positive infinity value: Infinity