typescript 打字稿：方法可以是静态的
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/43052041/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Typescript : Method can be static
提问by Ben Elliott
typescript v 2.1.0
打字稿 v 2.1.0
I wrote the following ServerRouter.ts
我写了以下 ServerRouter.ts
import {Router, Request, Response, NextFunction} from 'express';
export class ServerRouter {
router: Router;
/**
* Initialize the ServerRouter
*/
constructor() {
this.router = Router();
this.init();
}
/**
* GET index page
*/
public getIndex(req: Request, res: Response, next: NextFunction) {
res.render('index');
}
/**
* Take each handler, and attach to one of the Express.Router's
* endpoints.
*/
init() {
this.router.get('/', this.getIndex);
}
}
// Create the ServerRouter, and export its configured Express.Router
const serverRouter = new ServerRouter().router;
export default serverRouter;
Webstorm inspection warning
Webstorm 检查警告
> Method can be static
> 方法可以是静态的
is raised about the getIndex() function :
是关于 getIndex() 函数的：
BUT
但
If I changed it to static
如果我把它改成静态
public static getIndex()
公共静态 getIndex()
, the I get an error : TS2339 'getIndex' does not exist on type 'ServerRouter'
，我得到一个错误：TS2339 'getIndex' 在类型 'ServerRouter' 上不存在
What should I change ?
我应该改变什么？
thanks for feedback
感谢反馈
回答by Ben Elliott
A static method exists on a classrather than an object instance. You would have to change this.getIndexto ServerRouter.getIndexin your initfunction.
静态方法存在于类而不是对象实例中。您必须在您的函数中更改this.getIndex为。ServerRouter.getIndexinit
WebStorm suggests making methods static if they don't touch any of the state of an instance, since it suggests that the method exists at a level that is general to allinstances of that class.
WebStorm 建议将方法设为静态，如果它们不涉及实例的任何状态，因为它表明该方法存在于对该类的所有实例通用的级别。
You can find out more about staticin the TypeScript Handbook(see the "Static Properties" section).
您可以static在TypeScript 手册中找到更多信息（请参阅“静态属性”部分）。
