Question

var Top = 5;
for(var i=0;i<3;i++) {
    var Model = createView("First ModelView", Top, 135);        
}

Initially the Top = 5, for each iterating the Top should get added
with another +50, so that the next time it should create an Model Object with
Top 55 and so on…

What i tried

var Top = 5;
for(var i=0;i<3;i++) {
    var Model = createView("First ModelView", Top, 135); 
    Top+=50;        
}

Answer 1

Just try this

for(var i=0;i<3;i++) {
  var Model = createView("First ModelView", 5+i*50, 135);       
}

(assuming you just want to have a 50 increment with a 5 base for first case)