Math.atanh()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Math.atanh() 函数返回一个数值反双曲正切值,即:

x(-1,1),Math.atanh(x)=arctanh(x)= the unique ysuch thattanh(y)=x\forall x \in \left( -1, 1 \right), \mathtt{\operatorname{Math.atanh}(x)} = \operatorname{arctanh}(x) = \text{ the unique } ; y ; \text{such that} ; \tanh(y) = x

语法

Math.atanh(x)

参数

x

一个数值

描述

由于 atanh()Math 的静态方法,所以应该像这样使用:Math.atanh(),而不是作为你创建的 Math 实例的方法(Math 不是一个构造函数)。

示例

使用 Math.atanh()

js
Math.atanh(-2); // NaN
Math.atanh(-1); // -Infinity
Math.atanh(0); // 0
Math.atanh(0.5); // 0.5493061443340548
Math.atanh(1); // Infinity
Math.atanh(2); // NaN

对于大于 1 或是小于-1 的值,函数返回 NaN

规范

Specification
ECMAScript® 2025 Language Specification
# sec-math.atanh

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
atanh

Legend

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Full support
Full support

参见