JavaScript

In JavaScript on improving the performance of the site several suggestions (i), from the HTTP request to the page rendering several aspects to improve the performance of the site has put forward several suggestions, this article is a study of Steve

JavaScript itself can be regarded as a simple language, but we also continue to use the wisdom and flexibility of the model to improve it. Yesterday we applied these patterns to the JAVASCRIPT framework, and today these frameworks drive our WEB

No matter how technical you are, errors or anomalies are part of the life of the application developer. The discontinuity of web development leaves many places where errors can occur and that do occur. The key to the solution is to handle any

The first way to do this is to use JavaScript to convert number numbers to a currency string format (parameters: Keep decimal digits, currency symbols, integer decimal separator, decimal separator) The second method here is to convert a currency

1 questions from a netizen's question: There are multiple forms in a Web page, and each form corresponds to a certain type of data operation. For example, a detailed resume information page points 1. Personal Data 2. Working experience 3. Project

Let's focus today on how to extend the array object 1, directly on the Array.prototype expansion 2, using their own methods to expand the array of objects Directly on the Array.prototype, can not directly use the DOM object (such as:

Do you want to use the SetTimeout method of the Window object? Bingo, that's right! If you are in an application often to "delay the execution of a certain function", then based on the dry principle, can be extended for the function global object,

Use JavaScript to define the specification of a class as follows: Specify the class name and the constructor, and the class name (the constructor name) to capitalize the first letter: Copy Code code as follows: function YourClass ()

AppendChild definitionAppendChild (newchild:node): NodeAppends a node to the ChildNodes array for the node.Supported:ie 5.0+, Mozilla 1.0+, Netscape 6.0+, Safari 1.0+, Opera 7.0+Adding a node to an array of child nodes of the specified node is a bit

This article serves as one of the development learning notes. Text In web development, you often encounter situations where you need to highlight the table rows that the mouse points to. First of all, talk about the general situation. • Simple

2.9.5, additive operator Additive operators (that is, plus and minus signs) are usually the simplest operators, but in ECMAScript, each additive operator has a large number of special behaviors. 1. Addition Operator: Copy Code code as

Preface In the previous article, we explained the threshold function in image processing, and this article is about the expansion and corrosion function. Expansion and Corrosion To say that the concept may be difficult to explain, we look at the

Objective When you learn JavaScript, you often encounter the code to execute anonymous functions, today we mainly come to think about the implementation. Before we get to the details, let's talk about the term "self-execution," this article on the

Scope Global scope Local scope Scope chain Execution context Active Object Closed Bag Closure optimization There is a concept in JavaScript that has not been learned before--closures. What is closure? A closed package from a superficial

Recently used JavaScript to write a simple calculator, their own testing feel good, first of all to watch the next interface: This is the interface, but what about the function? Now it's just a simple standard calculator that can perform

I have recently read several posts on tags and javascript:void (0), and I would like to keep this in mind for your reference.Note: The following code is not fully tested, but the situation that each method may appear is largely explained.When

In the actual development, we often want to get an HTML element in the page, dynamically update the element's style, content attributes, and so on. So how do you get the elements to be updated? There are many ways to get these nodes with JavaScript,

I. OverviewStrings are almost ubiquitous in JavaScript, and when you're dealing with user input data, when you're reading or setting the properties of a DOM object, there's certainly more to it when you're manipulating cookies .... The core part of

Here are some JavaScript detection codes to detect iphones, ipods, and ipad devices. Copy Code code as follows: Apple Detection Object var Apple = {}; apple.ua = navigator.useragent; Apple.device = false; Apple.types = ["IPhone", "IPod",

The bitwise XOR operator (^) performs a bitwise XOR on two expressions. How to use: Copy Code code as follows: result = expression1 ^ expression2 Where result is any variable. Expression1 is any expression. Expression2 is any