framer prototype

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

[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

//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

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

Details about prototype and prototype chain in JavaScript -- Item15 Those who have used JavaScript must be familiar with prototype. However, this makes it difficult for beginners to understand that a function has a prototype attribute, you can add functions for it for instance access. The rest is unclear. Recently, I r

On the prototype and prototype chain of JavaScriptHere, we list several concepts of prototypes, as follows: Prototype property [[prototype]] __proto__ Prototype propertyWhenever a function is created, a property is created for the function

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:

Prototype originated from French. The software standards are translated as "prototype", which represents the initial form of things and also contains the meaning of models and templates. The prototype concept in JavaScript exactly reflects the content of the word. We cannot understand it as a pre-declared concept of prototype