jQuery Ajax with deffered Object (jQuery 1.9).

jquery-ajax-deffered.js

var jqxhr = $.ajax({
        beforeSend: function(){
            console.log('Before send request');
        },
        dataType: 'json',
        url: 'json.json'
    })
    .done(function( data, textStatus, jqXHR ) { 

        var $context = $(document.getElementById('content')),
            list = '<ul>',
            dataLength = data.length;

        for (var i = 0; i < dataLength; i++) {
            list += '<li>' + data[i].about + '</li>';
        }

        list += '<ul>';

        $context.append(list);

    })
    .fail(function( jqXHR, textStatus, errorThrown ) {
        console.log('error : ', textStatus); 
    })
    .always(function( a, textStatus, b ) {
        // .allway() has same arguments like .done() or .fail()
        // on success => a = data, b = jqXHR
        // on error => a = jqXHR, b = errorThrown
        console.log('first time allways textStatus : ', textStatus);
    });

jqxhr.always(function( a, textStatus, b ) {
    console.log('second time allways textStatus : ', textStatus);
});

jqxhr.done(function( data, textStatus, jqXHR ) {
    console.log('second time done textStatus : ', textStatus);
});