Javascript TypeScript 意外标记，需要构造函数、方法、访问器或属性
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TypeScript Unexpected token, A constructor, method, accessor or property was expected
提问by Guido Kleijer
Just trying to write a function within a class using typescript.
只是尝试使用打字稿在类中编写函数。
class Test
{
function add(x: number, y: number): number {
return x + y;
}
}
This results in the following error:
这会导致以下错误：
TypeScript Unexpected token, A constructor, method, accessor or property was expected.
TypeScript 意外标记，需要构造函数、方法、访问器或属性。
I copied the example from: https://www.typescriptlang.org/docs/handbook/functions.html
我从以下位置复制了示例：https: //www.typescriptlang.org/docs/handbook/functions.html
Am I missing something? I'm confused!
我错过了什么吗？我糊涂了！
回答by Mike Chamberlain
You shouldn't use the functionkeyword in a Typescript class definition. Try this instead:
您不应function在 Typescript 类定义中使用关键字。试试这个：
class Test {
add(x: number, y: number): number {
return x + y;
}
}
回答by Matthew Layton
TypeScript does not allow functiondeclarations as class members; it has a slightly different syntax for that...
TypeScript 不允许function声明为类成员；它的语法略有不同......
class Test
{
// This will bind the add method to Test.prototype
add(x: number, y: number): number
{
return x + y;
}
// This will create a closure based method within the Test class
add2 = (x: number, y: number) => {
return x + y;
}
}
