--- title: Math.log10() slug: Web/JavaScript/Reference/Global_Objects/Math/log10 translation_of: Web/JavaScript/Reference/Global_Objects/Math/log10 ---
{{JSRef("Global_Objects", "Math")}}

概述

Math.log10() 函数返回一个数字以 10 为底的对数.

语法

Math.log10(x)

参数

x
任意数字.

描述

如果传入的参数小于 0, 则返回 NaN.

示例

Math.log10(10)   // 1
Math.log10(100)  // 2
Math.log10("100")// 2
Math.log10(1)    // 0
Math.log10(0)    // -Infinity
Math.log10(-2)   // NaN
Math.log10("foo")// NaN

规范

Specification Status Comment
{{SpecName('ES6', '#sec-math.log10', 'Math.log10')}} {{Spec2('ES6')}} Initial definition.

浏览器兼容性

{{ CompatibilityTable() }}

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support {{CompatNo}} {{CompatGeckoDesktop("25")}} {{CompatNo}} {{CompatNo}} {{CompatNo}}
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support {{CompatNo}} {{CompatNo}} {{CompatGeckoMobile("25")}} {{CompatNo}} {{CompatNo}} {{CompatNo}}

相关链接