如何通过导出导出功能相同但参数不同的功能

Question

I need to export the same pre-defined function, but with different parameters by export.

What I'm trying to achieve:

module.exports = {
    adminSaysHello: sayText("Hello", "admin"),
    adminSaysText: sayText(text, "admin"),
    sayText: sayText
}

function sayText(text, author){
    console.log(`${author} said: ${text}`);
}

module.adminSaysHello();
module.adminSaysText("Good Bye");
module.sayText("Hello, my name is Foo", "Foo");

When executing above script I get the following error:

    adminSaysText: sayText(text, "admin"),
                           ^

ReferenceError: text is not defined

How to do this export correctly?

Answer 1

You should make use of closure functionality in JavaScript to make it work. Try this

 module.exports = { adminSaysHello: sayText("Hello", "admin"), adminSaysText: sayText(text, "admin"), sayText: sayText } function sayText(text, author){ return function(){ console.log(`${author} said: ${text}`); } } module.adminSaysHello(); module.adminSaysText("Good Bye"); module.sayText("Hello, my name is Foo", "Foo"); 

Answer 2

You'll need to create additional functions which then call the original function with specific parameters. That will look something like this:

module.exports = {
    adminSaysHello: () => sayText('Hello', 'admin'),
    adminSaysText: (text) => sayText(text, 'admin'),
    sayText: sayText
}