node.js wait for callback to finish?

0
votes

I have the following code:

            exported.removeWatcher(issueId, user, function(err, result) {
                if (result.statusCode != 204) { // Build a list of failed issues

                } else if (result.statusCode == 204) {

                }
                console.log();
            });

I know that using callbacks is one of the strengths of node.js, but for my use-case, I want to wait until i recieve a response from the above callback (i.e not execute the code further unless the callback is fired.) How can i achieve this?

1
javascriptnode.jsasynchronouscallback
Is it possible to have further execution of code happen from the callback itself? – Damon Kaswell
You can use promises;) – Alex Nikulin
Trying to block the current thread until a condition is met goes against the core design of nodejs. Even if you manage to do this, it would be unadvisable and had the potential to introduce done sis issues. – Don
You can't. Structure your code to work asynchronously. – Felix Kling
thanks for the comments guys. I was able to do this as advised by GoodDamon, but i will still have to think over the alternate ways to make this work asyncronously. thanks for all the advise. – Rookie

1 Answers

0
votes

You can use async.js. Just install it with npm and "require" it in your code.

For example:

async.series([ 
  function(callback) {
    myWaitForThisFunction(callback);
  },
  function(callback) {
    myThenDoThisFunction(callback);
  }
]);