Math.E

Math.E 静态数据属性表示欧拉数，即自然对数 e 的底数，大约为 2.718。

¥The Math.E static data property represents Euler's number, the base of natural logarithms, e, which is approximately 2.718.

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值

¥Value

$\mathtt{Math.E} = e \approx 2.718$

Property attributes of `Math.E`
Writable	no
Enumerable	no
Configurable	no

描述

¥Description

因为 E 是 Math 的静态属性，所以你始终将其用作 Math.E，而不是用作你创建的 Math 对象的属性（Math 不是构造函数）。

¥Because E is a static property of Math, you always use it as Math.E, rather than as a property of a Math object you created (Math is not a constructor).

示例

¥Examples

使用 Math.E

¥Using Math.E

以下函数返回 e：

¥The following function returns e:

function getNapier() {
  return Math.E;
}

getNapier(); // 2.718281828459045

规范

Specification
ECMAScript Language Specification # sec-math.e

¥Specifications

浏览器兼容性

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¥Browser compatibility

也可以看看

¥See also