function*
关键字可以在表达式内部定义一个生成器函数。
语法
function* [name]([param1[, param2[, ..., paramN]]]) { statements }
参数
-
name
- 函数名。在声明 匿名函数时可以省略。函数名称只是函数体中的一个本地变量。
-
paramN
- 传入函数的一个参数名。一个函数最多有 255 个参数。
-
statements
- 函数体。
描述
function*
表达式和函数
章节了解更多信息。
示例
下面的示例定义了一个未命名的生成器函数并把它赋值给x
。函数产出它的传入参数的平方:
var x = function*(y) { yield y * y; };
规范
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) function* |
Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) function* |
Draft |
浏览器兼容
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out
https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
function* |
Chrome Full support 49 | Edge Full support 12 | Firefox Full support 26 | IE No support No | Opera Full support 36 | Safari Full support 10 | WebView Android Full support 49 | Chrome Android Full support 49 | Firefox Android Full support 26 | Opera Android Full support 36 | Safari iOS Full support 10 | Samsung Internet Android Full support 5.0 | nodejs Full support Yes |
Trailing comma in parameters | Chrome Full support 58 | Edge No support No | Firefox Full support 52 | IE No support No | Opera Full support 45 | Safari ? | WebView Android Full support 58 | Chrome Android Full support 58 | Firefox Android Full support 52 | Opera Android Full support 43 | Safari iOS ? | Samsung Internet Android Full support 7.0 | nodejs Full support 8.0.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown