JavaScript

Mode 1. Constructor bindingfunction A () {this.am = "AAA";THIS.AF = function () {Console.log ("Aaafff");}}function B () {A.call (this, arguments);//a.apply (this. arguments);THIS.BM = "BBB";}var B = new B ();Console.log (b.am);B.af ();Mode 2. Using

Original: JavaScript Object-orientedA reference type is a data structure in JavaScript that organizes data and functionality together. It is also often called a class, but there is no class concept in JavaScript. Although JavaScript is an

A reference type is a data structure in JavaScript that organizes data and functionality together. It is also often called a class, but there is no class concept in JavaScript. Although JavaScript is an object-oriented language, it does not have the

JavaScript Object-orientedAn object is actually a reference type. The value of the object is an instance of the reference type. A reference type is a data structure in JavaScript that organizes data and functionality together. It is also often

Basic types and reference typesA primitive type value refers to a simple data segment, whereas a reference type value refers to an object that may consist of multiple valuesWhen you assign a value to a variable, the JavaScript parser first

The structure of the Web page is created by the tag, and the JavaScript function is used only to change some details without altering its underlying structure, and JS can also be used to alter the structure and content of the page:Traditional method:

Use right-click event to add Onmousedown= "if" (Event.button = = 2) alert (' Right click ') where you need the right button! '); You can inadvertently be asked by a colleague in JavaScript how to detect right-click events, and block the original

Basic types and reference typesA primitive type value refers to a simple data segment, whereas a reference type value refers to an object that may consist of multiple valuesWhen you assign a value to a variable, the JavaScript parser first

JavaScript Object-orientedAn object is actually a reference type. The value of the object is an instance of the reference type. A reference type is a data structure in JavaScript that organizes data and functionality together. It is also often

Scope primitive types and reference types for JavaScript variablesA primitive type value refers to a simple data segment, whereas a reference type value refers to an object that may consist of multiple valuesWhen you assign a value to a variable,

first, what is the "non-constructor" inheritance? For example, there is now an object called "Chinese".1 var Chinese = {2 Nation: ' China '3 };There is also an object called "Doctor".1 var Doctor ={2 career: ' Doctor '3 }How can I let "Doctor" to

In JavaScript, the general DOM elements, such as Div, have onmousedown, onmousemove, onmouseup 3 mouse events.The onmousemove event is triggered when the mouse is moved on the Div1 or when the left-click drag is pressed. How to distinguish between

We find that the real use of apply () and call () is to extend the scope of the function on which it runs, if we want to implement it in a traditional way.1. Each function contains two non-inherited methods: Apply () and call ().2. They are used in

Examples of JavaScript, jQuery, HTML5, and Node. js-Reading Notes 45.2.2 let the waterfall Flow After completing the infrastructure, you need to write JavaScript code. First, if the data is insufficient to display a screen, use the new data to

ExtJs -- 03 -- several progress bar codes. Let's take a look. /** // Complete the progress bar at a fixed time, that is, the pseudo progress bar Ext. onReady (function () {var progressBar = Ext. msg. show ({title: "progress bar", msg: "Progress

Comparison between undefined and null in javascript and examples of function types /*** Undefined = null returns true.* Undefined === null returns false* Undefined indicates that the variable is defined but not assigned a value.* Null indicates

CSS3 positioning | Position research, css3positionView area (view area) When a viewer views a webpage file, the User agent (UA) usually provides the viewer with a view area (window or other visible area ). When we adjust the area size, UA may change

Css priority mechanism description, css priority Mechanism First, describe the style priority. There are three types of styles: 1. External style (External style sheet) Example: 2. Internal style (Internal style sheet) Example: 3. Inline style)

Javascript callback function details Callback Function Definition A callback function is a function called by a function pointer. If you pass the pointer (address) of a function as a parameter to another function, when this pointer is used to call

Js differences between IE and firefox, and jsfirefox 1. firefox cannot support innerText.Firefox supports innerHTML but does not support innerText. It supports textContent to implement innerText, but by default, redundant spaces are retained. If