mockup prototype

What's the prototype? A Function type has a property prototype, which translates directly into a prototype. This property is a pointer to an object that contains properties and methods that are shared by all instances (objects) generated by the current function. This sentence according to the preceding, carefully pondering down, you can get the following code:

Special attention should be paid to reading and modifying the prototype in javascript, because the reading and writing of the prototype is not equivalent, and the javascript prototype For members inherited from prototype objects, the read and write operations are inherently unequal. For example, assume that the

even include data storage and logic verification. If the customer needs to see the same prototype as the actual product before development, a high-fidelity prototype is required, A low fidelity prototype can be created. Prototype tools the importance of requirements in product development is no longer contro

[Note] prototype and prototype of javascript prototypeIn javascript, a function itself is an object that contains methods and attributes.Length returns the number of parameters.In Chapter 4th, we have learned how to define constructors and use them to create (construct) objects. The main purpose of this approach is to call a function through the new operator to access the object's this value. Then, the cons

Prototype can have a lot of optimized implementation methodshttp://blog.csdn.net/liuqiwen0512/article/details/8089690In JavaScript, each function object has a default property of prototype, called the prototype member of the function object, which points to an object, called the prototype object of the function, and wh

For the rewrite of prototype prototype objects, we can use the following two ways: Add the attributes you want to add to the prototype object using the most primitive syntax function= "Tom"="Doctor"; Person.prototype.sayname=function() { alert (this. name);} var New Person (); Person1.sayname (); // Tom2. Use a simple

Basic concepts The prototype chain has an object for each constructor, and the prototype object contains a pointer to the constructor, and the instance contains an internal pointer to the prototype object. So, if the prototype object equals another instance of the prototype,

It's not as simple as prototype inheritance !! Deep Exploration of prototype 1 What is prototype The prototype attribute of the object in JavaScript, which can return the reference of the Object Type prototype. This is a pretty straightforward explanation. To understand it,

Each function created in JavaScript has a prototype (prototype) attribute, which is a pointer to an object that is used to contain properties and methods that can be shared by all instances of a particular type. If it is understood literally, then prototype is the prototype object that creates that instance by invoking

Before we discuss prototypes, we need to know what prototypes are, and keep these rules in mind .　　A prototype is a default property (prototype) of all function (constructor) objects, and its value is an object {what is inside}; So we generally say that the prototype is the property of the constructor, and it is also an object;What the

Each function we create has a prototype (prototype) attribute, which is a pointer to an object, and the purpose of this object is to include properties and methods that can be shared by all instances of a particular type. If it is understood literally, then prototype is the prototype object of the object instance creat

//1.几乎所有函数都有prototype属性,这个是个指针,指向原型对象;Function.prototype这个没有 //2.所有对象中都有__proto__属性.(Object.prototype该属性的值为null) //几乎所有函数都有 prototype/__proto__属性 //3.函数都是Function的实例(函数是通过Function创建出来的对象) //自定义函数,Function,Array,RegExp,String,Boolean,Number,Object都是函数,都是通过Function创建出来的 //4.几乎所有函数都继承自:Function.prototype //函数.__proto__===Function.prototype(除了Function.prototype本身,他没有

ExtJs -- 09 -- three methods of javascript Object writing prototype: the most efficient way to set prototype through prototype /*** Recommended three methods for writing javascript objects. The third method is recommended for execution efficiency. */function P (name, age) {this. name = name; this. age = age; // method 1 this. show = function () {alert (this. nam

First, overview:Use the prototype instance to specify the kind of objects that are created, and create new objects by copying those prototypes. Simply put, a copy of the object creates a new object (the clone of the object), and the prototype pattern is an object-creation pattern .Second, the use of the scene:Creating a new object can be obtained by copying an existing object and, if it is a similar object,

Prototype and prototype in JavaScript What is the prototype? The Function type has a prototype attribute, which is translated as a prototype. This attribute is a pointer pointing to an object that contains some attributes and methods that are shared by all instances (objects