Node.js reusing function

Question

Node.js reusing function

i have written a function in file hello.js

dep1=require('dependency');
function hello(Args, callback){
    modifiedData= dep1.someFunction(Args);
    console.log(modifiedData);
    callback(modifiedData);
}
module.exports=hello;

how would i re-use this function in other file?

h=require("./hello");
h.hello("Howdy!", function(err,args){
    do something;
}

Any pointers?

node.js

Answer 1

That looks acceptable, although it is a bit hard to read. But when your callback has err as the first argument, make sure you send a null object as the first parameter:

callback(null, modifiedData);

When you are using module.exports, then the module itself can be called as that function. So you will reuse that function like this:

h = require("./hello");
h("Howdy!", function(err, args) {
    //do smth
});

Otherwise, in order for your example to work, just delete module. and add the name (can be a different one):

exports.hello = hello;