Reputation: 783
I am newbie to JavaScript, I am running a very basic code but having trouble with it. The code is as follows
MyService.js
var http = require('http');
var express = require('express');
var app = express();
var gpioControl = require('./GPIOController');
app.get('/pressUp/', function (req, res){
console.log("Pressed Up");
gpioControl.upButtonPress();
});
app.get('/pressDown/', function (req, res){
console.log("Pressed Down");
gpioControl.downButtonPress();
});
app.listen(3000);
console.log("The server is running on port 3000");
GPIOController.js
var upButtonPress = function ()
{
console.log ("UP Button has been pressed!");
}
var downButtonPress = function()
{
console.log ("Down Button has been pressed!");
}
The Error I get is below :
TypeError: undefined is not a function
at C:\Users\mehroz\Desktop\Rasberry Pi Automation\MyService.js:11:14
at Layer.handle [as handle_request] (C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\router\layer.js:82:5)
at next (C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\router\route.js:110:13)
at Route.dispatch (C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\router\route.js:91:3)
at Layer.handle [as handle_request] (C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\router\layer.js:82:5)
at C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\router\index.js:267:22
at Function.proto.process_params (C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\router\index.js:321:12)
at next (C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\router\index.js:261:10)
at expressInit (C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\middleware\init.js:23:5)
at Layer.handle [as handle_request] (C:\Users\mehroz\Desktop\Rasberry Pi Automation\node_modules\express\lib\router\layer.js:82:5)
Upvotes: 0
Views: 682
Reputation: 2365
if GPIOController.js is a node module (which it looks like it is), it needs to use the CommonJS pattern. That being said, you should change the var declarations in GPIOController to be exports.your-function-name-here declarations.
So, var upButtonPress = function(){} would become
exports.upButtonPress = function(){}
It would then work as you are using it in MyService.js.
Upvotes: 1