Javascript 是否可以在 ES6/7 中导出箭头函数?
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Is it possible to export Arrow functions in ES6/7?
提问by jozzy
The export statement below gives a syntax error
下面的导出语句给出了一个语法错误
export default const hello = () => console.log("say hello")
why ?
为什么 ?
I'm only able to export named functions
我只能导出命名函数
export function hello() {
console.log("hello")
}
What is the reason?
是什么原因?
回答by Felix Kling
Is it possible to export Arrow functions in ES6/7?
是否可以在 ES6/7 中导出箭头函数?
Yes. export
doesn't care about the value you want to export.
是的。export
不关心您要导出的值。
The export statement below gives a syntax error ... why?
下面的导出语句给出了一个语法错误......为什么?
You cannot have a defaultexport andgive it a name("default" is already the name of the export).
您不能拥有默认导出并为其命名(“默认”已经是导出的名称)。
Either do
要么做
export default () => console.log("say hello");
or
或者
const hello = () => console.log("say hello");
export default hello;
回答by Raphael Pinel
If you don't want a default export, you can simply export a named function with this syntax:
如果您不想要默认导出,则可以使用以下语法简单地导出命名函数:
export const yourFunctionName = () => console.log("say hello");