How to pass a Variable or Argument to a callback function in Node.js

PassAVariableToCallbackFunction.js

var mainFunction = function(callback) {
	//Did something
	console.log("In Main Function");
	callback();
}

var callbackFunction = function() {
	console.log('Variable: ' + this.variable);
	console.log("In Callback Function");
}

mainFunction(callbackFunction.bind({"variable": "Variable"}));