Definition and Usage
定义与用法

The Infinity property is a numeric value that represents positive or negative infinity.
Infinity属性表示正无穷大或负无穷大。

Infinity is displayed when a number is higher than 1.7976931348623157E+10308, and -Infinity is displayed when a number is lower than -1.7976931348623157E+10308.
当一个数字大于1.7976931348623157E+10308时正无穷，当一个数字小于-1.7976931348623157E+10308时负无穷。

Syntax
语法

Infinity

Tips and Notes
注意

Note: Anything divided by Infinity is 0 and anything multiplied by Infinity is Infinity.
注意：任意独立的元素与Infinity对比为0，任意多个元素与Infinity对比为无穷。

Example
实例

In this example we will show what happens if a number exceeds the infinity limit:
在下面的例子中，我们将演示一个数字于无穷比较的结果：

<script type="text/javascript">

var t1=1.7976931348623157E+10308
document.write(t1)

document.write("<br />")

var t2=-1.7976931348623157E+10308
document.write(t2)

</script>

The output of the code above will be:
输出结果为：

Infinity
-Infinity

Try-It-Yourself Demos
互动演练

Infinity
What happens if a number exceeds the infinity limit?
数字于无穷比较的结果

评论 (0) All