Auto save form in model driven app

 Auto save form in model driven app on change event on controls

Call below method on any control's change event

function autoSavedData(formcontext)

{

    var frmcontext = formcontext.getFormContext();

    frmcontext.data.entity.save("no");

//below parameter can be passed in save mehtod as per requirement

//no

//saveandclose

// saveandnew

}