function a(){}
var type = Object.prototype.toString.call(a);
//type = [object Function]
var a1 = new a();
var type = Object.prototype.toString.call(a1);
//type = [object Object]
function a(){}
var type = Object.prototype.toString.call(a);
//type = [object Function]
var a1 = new a();
var type = Object.prototype.toString.call(a1);
//type = [object Object]