javascript-Secure Structural function mode

function Person (name,age) {

var o = new Object ();

O.sayname = function () {

alert (name);

}

}

var friend = new Object (NAME1,AGE1);

Friend.sayname (); name1;

Variable friend Vaocun is a safe object, and in addition to calling the Sayname method, there is no other way to access other data members. Even if other code adds methods or data members to the object, it is impossible for an egg to access the raw data passed into the constructor.

Similar to the parasitic constructor pattern, objects created with the secure constructor pattern have little to do with constructors, so the instanceof operator does not make sense for such objects.

javascript-Secure Structural function mode