​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>JavaScript Number 对象属性</h1>
​
<p>POSITIVE_INFINITY</p>
​
<p id="demo"></p>
​
<script>
var x = Number.POSITIVE_INFINITY;
document.getElementById("demo").innerHTML = x;
</script>
​
</body>
</html>
​