Javascript Get Result From Callback. Log result asynchronousFunction callback The final piece of the puzzle is in the function that calls mainFunction. Now it is time to bring in a callback.
Asynchronicity means that if JavaScript has to wait for an operation to complete it will execute the rest of the code while waiting. There are three methods to deal with Asynchronous calls built into JavaScript as shown below. Now it is time to bring in a callback.
Given that you are using Nodejs you can use co and co-request to achieve the same goal without callback concerns.
Before the code executes var and function declarations are hoisted to the top of their scope. If what you want is to get your code working without modifying too much. While JavaScript is asynchronous its not multithreaded. Given that you are using Nodejs you can use co and co-request to achieve the same goal without callback concerns.