Asynchronity with Promise

function fooFunc(){
    var bar = "something";
    doSomething(bar)
    .then(function(result){
        console.log(result);
    });
}

function doSomething(msg){
    return new Promise(function(resolve, reject){
         setTimeout(function(){
             resolve(msg+"append");
         }, 1000 );
    });
}

fooFunc();