Math.LN2Math.LN2 静态数据属性表示 2 的自然对数,大约为 0.693: ¥The Math.LN2 static data property represents the natural logarithm of 2, approximately 0.693:Try it 值¥Value 𝙼𝚊𝚝𝚑.𝙻𝙽𝟸 = ln ( 2 ) ≈ 0.693 \mathtt{Math.LN2} = \ln(2) \approx 0.693 Property attributes of Math.LN2 Writable no Enumerable no Configurable no 描述¥Description 因为 LN2 是 Math 的静态属性,所以你始终将其用作 Math.LN2,而不是用作你创建的 Math 对象的属性(Math 不是构造函数)。 ¥Because LN2 is a static property of Math, you always use it as Math.LN2, rather than as a property of a Math object you created (Math is not a constructor). 示例¥Examples 使用 Math.LN2¥Using Math.LN2 以下函数返回 2 的自然对数: ¥The following function returns the natural log of 2: jsfunction getNatLog2() { return Math.LN2; } getNatLog2(); // 0.6931471805599453 规范SpecificationECMAScript Language Specification # sec-math.ln2¥Specifications 浏览器兼容性BCD tables only load in the browser with JavaScript enabled. Enable JavaScript to view data.¥Browser compatibility 也可以看看¥See also Math.exp() Math.log() Math.log2()