JavaScript

First of all, = = Equality equivalent, = = = Identity identity.= =, when the value types on both sides are different, type conversion is performed before comparison.= = =, do not type conversion, different types of certain range.The following are

Refer to The understanding JavaScript prototypes and Scopes series for the previous sections of the articleReferring to the scope, there is a sentence that everyone (with JS development experience) may be more familiar with: "JavaScript does not

JavaScript pre-defines a series of global variables and functions to avoid using these predefined names in custom variables and functions: Arguments encodeURI Infinity Number Regexp

The scope is described briefly above, and this article will take a deeper look at the combination of scope and context.As we've described above, in addition to the global scope, each function creates its own scope, which is determined when the

JavaScript-Object-specific statement [for...in statement]

JavaScript-Object-specific statement [with statement]

1, prototypeThere is no concept of class in JavaScript, but it is true that JavaScript can be overloaded, polymorphic, and inherited. These implementations can all be explained by reference and variable scopes in JavaScript, combined with prototype.2

Well-known variable naming conventionsCamel Labeling MethodThe first letter is lowercase, and the next letter begins with an uppercase character. For example:var testvalue = 0, secondvalue = "HI"; Pascal Labeling MethodThe first letter is

a JavaScript instance every day-removes whitespace at the end of the string clickMeDetect low-version browsers, backwards compatible:if (typeof String.Trim = = "undefined") String.prototype.trim = function () { return This.replace (/(^\s*) | ( \s*$

One, the JavaScript engine is single threadAs can be seen from the code below, the first code in settimeout is a dead loop, because it is a single thread, the following two timers will not be able to execute.Scripttype= "Text/javascript">SetTimeout (

Defining classes and objectsFactory modefunction Createcar (color, doors, mpg) { var car = {}; Car.color = color, car.doors = doors, car.mpg = mpg; Car.showcolor = function () {alert (this.color);}; return car;} Factory mode is simple, so it

Translator JjfatDate: 2012-9-17 Source: gbin1.comWith the increasing density of front-end development, the use of Ajax and JSON more and more frequently, we certainly avoid in the foreground development of a large number of use of tags, often see

Dom manipulation of javascript: DOM: Document Object Model documents have a lot of elements, Each element is referred to as an object in the document. The model can explain the problem, the object constructs the model to, the HTML many documents,

Solution to socket hang up error in Nodejs Post request, nodejshang Refer to the method used to send an http post request on the official node. js website to simulate post submission. The socket hang up error is reported in actual use. Later, it was

In-depth understanding of some features of Node. js, in-depth understanding of node. js As an emerging background language, Node. js aims to help programmers quickly build scalable applications. Node. js has a lot of attractions, and there are

Jquery is used to obtain the tag value under the same-source iframe body. jqueryiframe Test.html Html code jquery Login.html Html code login page User Name: password: Note: The same source must be used. How does Jquery

JQuery kernel explanation and practice Reading Notes 1: Prototype Technology decomposition 27. continuation-Function Extension the jQuery framework extends functions through the extend () function. The extend () function is also very easy to

Details about js variables, scopes, and memory, and js Variables Basic Type values include undefined, NUll, Boolean, Number, and String. These types occupy a fixed size space in the memory, and their values are stored in the stack space, we access

Js function for converting numbers into uppercase and lowercase RMB expressions There are many ways to convert numbers into large-sized RMB. This example describes how to use js to complete the conversion. Let's take a look at the following

Apply CSS3 animation to implement 12 notification styles and css312 notification styles Today we want to share some simple website notification effects. There are many ways to present a message to the user: from the classic roaring notification to