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Showing content from https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Math/E below:

Math.E - JavaScript | MDN

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

function compoundOneYear(interestRate, currentVal) {
  return currentVal * Math.E ** interestRate;
}

console.log(Math.E);
// Expected output: 2.718281828459045

console.log((1 + 1 / 1000000) ** 1000000);
// Expected output: 2.718280469 (approximately)

console.log(compoundOneYear(0.05, 100));
// Expected output: 105.12710963760242

由于 E 是 Math 对象的静态属性，所以应该像这样使用：Math.E，而不是作为你创建的 Math 实例对象的属性（Math 不是构造函数）。

以下函数返回 e 的值：

function getNapier() {
  return Math.E;
}

getNapier(); // 2.718281828459045

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