chaining

Let say I chained the $.Deferred like this. $.each(data, function(k, v) { promise.then(function() { return $.post(...); }).then(function(data) { if(data)... // here is the conditions return $.post(...); }).then(function(data) { if(data)... // here is another condition return $.post(...); }) }); promise.done(function() { console.log("All Done!"); }); Am I doing it right? how do I prevent the next chain to execute if the condition return false, and where do I do this: if(data){ console.log('Success'); } Can that code be in between those .then s? Joey, whether or not you are doing it right

Actaully my application is having hundreds of pages. Now i have to attach an event 'disablePage' on onSubmit of form. I don't want to go to each and every page and write: <form name="frmname" onSubmit="disablePage();"> What i am doing right now is:- excerpt from common.js file; [ included in all pages ] /* we have to attach 'attachFormSubmit' method on onLoad event, otherwise forms[0] will always be null. If there is any alternative, then please suggest one */ if (window.addEventListener){ window.addEventListener('load', attachFormSubmit, false); } else if (window.attachEvent){ window

This question already has an answer here: Hadoop mapreduce : Driver for chaining mappers within a MapReduce job 4 answers I'm relatively new to Hadoop and trying to figure out how to programmatically chain jobs (multiple mappers, reducers) with ChainMapper, ChainReducer. I've found a few partial examples, but not a single complete and working one. My current test code is public class ChainJobs extends Configured implements Tool { public static class Map extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> { private final static IntWritable one = new IntWritable(1);

Alright, I have a really basic QStandardItemModel , filled with some numbers. I managed to display it in a QTableView , it's ok. I created a new model ( subclass either of QAbstractItemModel or QAbstractProxyModel ), which is some kind of a layer of an existing model - it is needed to set the sourcemodel, and this new layer should do some transformations on the real one. My problem is, that in the top layer, say "layer model" the data( const QModelIndex & index, int role ) member function never called, however i would like to alter the displaying methods by the role parameter. Here is a sample