Jquery (Diplomado .Net 11-14)

Get Síncrono

var xyz = null

$.ajax({ url: 'http://www.someurl.com?parameter1=value&parameter2=value2', 
         async: false,
         dataType: 'json',
         success: function(data) {
              xyz = data.positions[0];
            }
        });


alert(xyz);

Patch

$.ajax({ 
    url: 'myUrl',
    type: 'PATCH',
    data: JSON.stringify({HoraSalida: new Date()}),
    beforeSend: function(xhr){
        xhr.setRequestHeader('Content-Type','application/json');
        xhr.setRequestHeader('Authorization', 'myToken);
    },
    success: function(res){
        debugger;
    }
});

Buscar en array de objetos

var result = $.grep(myArray, function(e){ return e.id == 'valorBuscado'; });