javascript getelementsbyclassname

What does JavaScript mean? What's the use? I believe there are a lot of students can have this question, then today's PHP Chinese network to give you a talk about the concept of JavaScript and what is the use of JavaScript. What does JavaScript mean? From the Baidu Encyclopedia we can find

+": "+ El ); } foreach ({A: 'A', B: 'B ', c: 'C'}, print); // 1: Stupid \ n 2: egg \ n 3: \ n 4: Seat \ n 5: right \ N 6: Ming foreach ("stupid motto", print); function person (name, age) { This. name = Name | ""; This. age = age | 0; }; person. prototype = new person; var Fred = new person ("jxl", 22); Fred. language = "Chinese"; // late binding // name: jxl \ n age: 22 \ n language: Chinese foreach (Fred, print ); Note: The index subscript In the callback function starts from 1 Wh

JavaScript Advanced Programming Chapter 11th--dom ExtensionsThe main extension of DOM is the selector API, HTML5, and element traversalSelectors API: Defines two methods Queryselector () and Queryselectorall () that can be obtained from the DOM based on CSS selectorsElements. The Queryselector () method receives a CSS selector, returns the first element that the pattern matches, and Queryselectorall () receives the parameterNumber, but returns the Nod

TypeOf can tell us whether its operand is a string (string), a numeric value (number), a function, a Boolean value (Boolean), or an object.1. Strings (String)Alert (typeof ("Asss")), Alert (typeof ("123")), and so on.The warning box now displays a string.Note: strings need double quotes.2. Value (number)Alert (typeof (123)).The warning box now displays number.Note: typeof can contain only numbers, no letters and other special symbols, and no double quotes.3. Functions (function)Function Union ()

Regardless of the coding style, design pattern, etc., the coding style is generally focused on the writing specification, while the design pattern is biased toward the program architecture design. These "patterns" in this article include some common methods or tips for writing JavaScript code, which can help beginners of JavaScript to quickly improve the quality of their code. Of course, before the first to

predecessors. However, IE8, such as the new browser has been implemented Queryselector and Queryselectorall method, until IE6 and IE7 scrapped the day, it is useless. There is no worry in the realization of its principle to explain. Because too long, will not stick out, specific to the original author website to see. 8, Getelementsbyclass () I have a collection fetish, with many versions on hand, and finally brainstorming myself to achieve one. Here is my implementation:01.var

Some of the features of JavaScript bring much more trouble than they do. Chapter 2 Essence Some of the features of JavaScript bring much more trouble than they do. Some of these features may cause portability problems due to imperfect specifications. Some features may generate codes that are hard to understand and modify; some features make my code style too complex and error-prone; others are design error

Article Introduction: JavaScript parsing: Let search engines see more authentic pages. For a long time, webmasters choose to use JavaScript to achieve the dynamic behavior of the Web page, the reason for this is varied, such as speed up the page response speed, reduce site traffic, hidden links or embedded ads. Because the early search engine does not have the corresponding processing ability, ca

JavaScript is a programming language. Syntax Rules define the language structure. JavaScript syntax JavaScript is a programming language. Syntax Rules define the language structure. JavaScript syntax JavaScript is a scripting language. It is a lightweight but powerful progra

After being used to OOP programming, I will find many strange and strange phenomena (such as closures) in the Javascript world. I spent a lot of energy studying the root of these strange phenomena and finally found: the scope originated from javascript is not block-level scope, and it also has a set of scope-chain-based identification lookup mechanism. Most of the content in this article comes from the Inte

Javascript has a bad reputation on the Internet, however, it is hard for you to find another language that is so dynamic, widely used, and rooted in our lives. Its low learning threshold is called by many people. it is a pre-school scripting language, another thing that makes people laugh at is that the concept of Dynamic Language is to use a high standard of static data types. In fact, you and Javascript b

Basic javascript programming handler variables, objects, data types and functions, javascript In web standards, a webpage consists of three parts: structure, representation, and behavior. Structure standard ----> XHTML; Standard Format -----> CSS; Behavior standard -----> javascript; Javascript is a programming languag

technically , mobile apps on ios,Android and Windows Phone are developed in different programming languages, and iOS apps use Java with Objective-c,android apps, and The Windows Phone app Uses. NET. 。 With the improvement of JAVASCRIPT,CSS and HTML knowledge, You can also build a fantastic mobile app. In this blog post, we will introduce some excellent JavaScript mobile application development frameworks.Wh