jquery $.when error when using version 1.8.3

Question

I am keeping a variable number of ajax promises in an array. And when all promises are done I do something else:

$.when.apply($, promises).then( function(){ 
    var myArgs = [];
    if(promises.length == 1){
        var myArgs = [];
        myArgs[0] = arguments;
    }else{
        myArgs = arguments;
    }

    for(i=0; i<myArgs.length; i++){
        fileArr[promise2File[i]]['prop1'] = myArgs[i][0].type;
        fileArr[promise2File[i]]['prop2'] = myArgs[i][0].message;
    }
});

When I am using jquery version 1.6.1 it works perfectly. However when I switch to a more recent version (1.8.3) I get the following js error when there are more than one ajax promise. It works fine with a single promise:

Uncaught TypeError: Object [object Object] has no method 'progress'

I checked the type of the promisses variable to make sure it is array (with instanceof Array) and it is.

In case it is helpful this is how I fill the promises array:

var i = 0;

for(var file in fileArr){
    if (fileArr.hasOwnProperty(file)){
            if(fileArr[file].hasOwnProperty('status')){
                if($.inArray(fileArr[file]['status'], ['held','submitted']) !== -1){
                    promise2File[i] = file; // I need this to map each promise to the corresponding file
                    promises[i] = parent.myFunc('cancel', [file], false); //myFunc returns the ajax promise
                    i++;
                }
            }
        }
}

Any thoughts why I am getting this error on the newer version of jquery?

Answer 1

in jQuery 1.8, that version of .then was removed and replaced with one that instead of accepting done/fail callbacks, accepts done/fail filters.

http://api.jquery.com/deferred.then/

Changing from .then to .done should solve your problem.

$.when.apply($, promises).done(function(){ 

.then after 1.8 is essentially the same as .pipe prior to 1.8