Shulou(Shulou.com)06/01 Report--

This article mainly shows you "typescript how to achieve function overloading", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "typescript how to achieve function overloading" this article.

Function overload

When you want to pass the user parameter, do not pass flag, when you pass para, you will pass flag. You can write something like this:

Interface User {name: string; age: number;} const user = {name: 'Jack', age: 123}; class SomeClass {public test (para: User): number; public test (para: number, flag: boolean): number; public test (para: User | number, flag?: boolean): number {/ / concrete implementation return 1;}} const someClass = new SomeClass (); / / oksomeClass.test (user); someClass.test (123, false) / / Error// someClass.test; / / Argument of type 'number' is not assignable to parameter of type' User'.// someClass.test (user, false); / / Argument of type'{name: string; age: number;}'is not assignable to parameter of type 'number'. These are all the contents of the article "how to achieve function overloading in typescript". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.