Node.js - Using the async lib - async.foreach with object

Question

I am using the node async lib - https://github.com/caolan/async#forEach and would like to iterate through an object and print out its index key. Once complete I would like execute a callback.

Here is what I have so far but the 'iterating done' is never seen:

    async.forEach(Object.keys(dataObj), function (err, callback){          console.log('*****');      }, function() {         console.log('iterating done');     });   

1. Why does the final function not get called?

2. How can I print the object index key?

Answer 1

The final function does not get called because async.forEach requires that you call the callback function for every element.

Use something like this:

async.forEach(Object.keys(dataObj), function (item, callback){      console.log(item); // print the key      // tell async that that particular element of the iterator is done     callback();   }, function(err) {     console.log('iterating done'); });