gistfile1.txt

var d = new dojo.Deferred();

d.addErrback(function(){
    console.log('first error handler');
});

d.addErrback(function(){
    console.log('2nd error handler');
});

d.addCallback(function(){
    console.log('about to throw an error');
    throw(new Error);
});

d.addErrback(function(){
    console.log('3rd error handler');
});