hologram prototype

Js-oriented prototype language summary, js-oriented prototype Language1. Search and delete Arrays Function WarrperArray (array ){This. array = array; } // Returns the subscript. WarrperArray. prototype. existValue = function (val ){ For (var j = 0; j If (this. array [j] = val) return j; } Return-1; } // Delete the specified ElementWarrperArray.

1 What is prototype The prototype property of an object in JavaScript that returns a reference to the object type prototype. This is a rather awkward explanation, and to understand it, the concept of object type (type) and prototype (prototype) should be understood first. B

JavaScript does not support inherited patterns of traditional classes, it is a prototype-based inheritance, that is, through prototype settings to implement inheritanceLet's consider the following question function person () { this . Name = "haha" ; this . Sayname = function () {Console.log ( this .name); }} var p1 = new person (); var p2 = new person (); P1.say

The prototype mode belongs to the creation mode of the object. By giving a prototype object to indicate the type of all objects created, and then creating more objects of the same type with the method of copying the prototype object.The prototype model has two forms: simple form and boarding form.Primitive model patter

JavaScript is a dynamic language (Dynamic Language Dynamics Programming Language: Dynamic type language, meaning that the type of check is done at run time, that is, "weak type" language), there is no class concept, there are classes reserved words, But cannot be used as a variable namePrototype: Each object in JavaScript has an internal private connection pointing to another object, which is the prototype of the original object note: The

Use a prototype instance to specify the type of the object to be created, and copy the prototype to create a new object. 　　 2. Applicable scenarios The main idea of the prototype mode is to clone a new object based on an existing object. Generally, a clone method is provided for an object, through which a copy of the object is returned, this method of object crea

Prototype mode is the creation mode. Design intent: Use the prototype instance to specify the type of object to create and create a new object by copying the prototype. We use the class diagram of the example that builds the CV to illustrate the prototype pattern. Class Diagram: The

__PROTO__: This property is a property of an instance object, each of which has a __proto__ property that points to the prototype object (prototype) of the constructor that instantiates the instance.Proterty: This method is the property of the object. (it is said to be similar to an object's attr, such as in a DOM object)Prototype: Each constructor has a

Constructors Create objectsLet's first use the constructor to create an object:function Person () {} var New = ' name '// nameIn this example, person is a constructor, and we create an instance object person with new.It's easy, then, to get to the point:PrototypeEach function has a prototype attribute, which is the prototype that we often see in various examples, such as:function Person () {} // Although