deferred1.js

var isAsync = true;

function callWebService(){
    console.log('Calling web service');
    $.ajax({
        url: "http://date.jsontest.com/",
        async : isAsync
    }).done(function (data) {
        console.log(data);     
    });
}

function localFunc1(){
    console.log('Calling local func1');
}

function localFunc2(){
    console.log('Calling local func2');
}

$.when(localFunc1())
    .then(callWebService)
    .then(localFunc2);

//Output

//Calling local func1
//Calling web service
//Calling local func2
//Object {time: "05:24:04 AM", milliseconds_since_epoch: 1416029044010, date: "11-15-2014"}  


//Output if async = false

//Calling local func1
//Calling web service
//Object {time: "05:24:04 AM", milliseconds_since_epoch: 1416029044010, date: "11-15-2014"}  
//Calling local func2