除法 (/)

除法运算符 (/) 计算了两个操作数的商,左边的数是被除数,右边的是除数

语法

Operator: x / y

例子

基本除法

1 / 2              // 0.5

Math.floor(3 / 2) // 1

1.0 / 2.0         // 0.5

除以0

2.0 / 0     // Infinity

2.0 / 0.0   // Infinity, because 0.0 === 0

2.0 / -0.0  // -Infinity

规范

Specification
ECMAScript (ECMA-262)
Division operator

浏览器兼容性

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
Division (/)Chrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 3Opera Full support 3Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0nodejs Full support 0.1.100

Legend

Full support  
Full support

参见