JavaScript

The page contains three levels: Structure (HTML) Performance (CSS) Behavior (JavaScript) Web standards, the three to separate, the Web page source code consists of three parts:. html files,. css files, and. js files. This means

Because there are a lot of tutorials on the web, it's easy to get in touch with other programming languages, I don't write much here. Next I'll just write about some of the things I think are prone to problems in the learning process.I.

I Know it well:I read it in the grammar long ago.-william Shakespeare, The tragedy (tragedy; disaster; tragedy) of Titus AndronicusThis chapter introduces the grammar of the good parts of JavaScript, presenting a quick overview of what the language

In JavaScript, VAR is used to declare variables, but this syntax is not strictly required, and in many changes, we can directly use a variable without var to declare it.[JavaScript]View Plaincopyprint? var x = "XX"; y ="xxx";

Original: JavaScript implicit type conversion stepsThe implicit type conversion, which is said here, is the conversion caused by = =. Returns False if there is a Nan And see if there's a Boolean, and Boolean converts the Boolean to a number.

Let's first explain what "free variables" are.The variable x used in a scope is not declared in a scope (that is, declared in other scopes), and for a scope, X is a free variable. Such asAs in the previous program, when the FN () function is called,

Nanyi The first and second sections of this series introduce JavaScript module prototypes and theoretical concepts, and today we show you how to use them in combat. I am using a very popular library require.js. First, why use Require.js? At the

Below, we will introduce the 2014 hottest 21 JavaScript frameworks, prepared for front-end developers:) It is well known that the JavaScript framework is one of the best features of the JavaScript programming language.The JavaScript framework is a

JavaScript: Refreshes the parent window when a pop-up window is closed2010-08-13 09:25:29| Category: Code samples | Report | Font size Subscription Description : Refreshing the parent window when a pop-up window is closed can also be said to

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this series as effective JavaScript 's reading notes. Suppose you need a API used to traverse several elements, like this:var it = values (1, 4, 1, 4, 2, 1, 3, 5, 6); It.next (); 1it.next (); 4it.next (); 1The corresponding implementation can

Factorial, that is, 5! = 5*4*3*2*1, first look at the traditional approach, using the while loop implementation:function factorial (num) { var result = num; if (num2) { result = Result*num; } return result;}The JavaScript recursive

scoped chains and closures in JavaScript2012-06-29 11:41 1878 people read reviews ($) Collection report There is a concept in JavaScript that has not been learned before--closures. What is closure? The enclosing package, which is understood from

The Return Value of the constructor in javascript and the process of the new object First, it is clear that constructors in javascript do not need to return values, which is similar to java. We can think that the biggest difference between a

A simple method to determine whether the JavaScript Object is null or the property is null First, let's talk about the difference between null and undefined: If typeof is executed on declared but uninitialized and undeclared variables, "undefined"

Node. js uses mongoskin to operate mongoDB instances. I. Nonsense Developed the tourism tag service, Weibo tag retrieval system, map service, and web APP service from March January... use MongoDB scenario from. NET, JAVA environment to node. js

Analyze the apply and call methods of JavaScript functions from the JQuery source code, jqueryapply $. When the each method is very, suddenly think of $. each ($ ('div '), function (index, entity) {}); where does the index and entity come from and

When using the closure feature of setTimeout () in Javascript, you need to pay attention to the problem. SetTimeout is often used to delay the execution of a function. Its usage is: Copy codeThe Code is as follows:SetTimeout (function (){...},

JavaScript + IndexedDB Implement Message Board: the client stores data I saw a friend who asked: how to implement the message board effect with js. At that time I also wrote a, but did not achieve data storage: http://www.ido321.com/591.html Now let'

JQuery fixed floating Sidebar (jQuery fixed Sidebar) This function is now widely used. If the page is relatively high, when the scroll bar is dragged to the bottom of the page, a fixed DIV box following the browser will appear on the sidebar. The