JavaScript

I have released a javascript operation cookie. I have a lot of knowledge in it. You can search for it on this site. In addition, I have added two methods for js operation cookie. One is a simple version and the other is an encapsulation version, I

In the operations on the class attribute, the element style has actually been changed, but these are indirectly effective according to the configured CSS rules. Therefore, it is necessary to change the previously set CSS rules in a more direct

The user enters a form, enters the admission ticket and verification code, verifies whether the user enters the form, click query and submit, and then obtains the returned data from the server and displays an example of submitting a form ajax query

Function reference. For memory overhead analysis, you can refer to the following code: The Code is as follows: Var arr = [];Var cc = function () {alert ('xx ');};For (var I = 0; I Arr [I] = function () {alert ('yy ');}Arr [I + 10] = cc;}Console.

ECMAScript5.1 indicates that the array method concat is a general (generic). This article refuted this conclusion because it is not such an ECMAScript 5.1 specification as mentioned in section 15. 4.4.4: The Code is as follows: The concat

This article describes two important knowledge points in JavaScript: expressions and statements. 1. statements and expressions Expressions in JavaScript are different from statements. an expression generates a value, which can be placed wherever a

The first is to implement separation between module loading and callback functions through synchronization policies, and the second is to implement separation between module loading and callback functions through asynchronous policies, by

It is mainly used for image display. You need to click the next group of images to slide between the left and right. For more information, see The Code is as follows: $ (Function (){Var page = 1; // initialize the page variableVar I = 2; // two

Today we will introduce the tooltip creation of the prompt box plug-in. We will also introduce the development of the custom selector plug-in. We will first introduce the development of the custom selector. Its code structure is as follows: The

In this chapter, we will create an auto-increment input box plug-in, jquery. aotogrow. js? 1.1.23 check the html code first: The Code is as follows:

IE is a bubble event, that is, from the most specific event target to the least specific event Target I. event stream IE is a bubble event, that is, from the most specific event target to the least specific event target. Netscape Navigator uses

Inheritance is an essential feature of object-oriented languages. That is, one class can reuse the methods and attributes of another class. In JavaScript, the inheritance methods include the following methods: Object impersonating, call (), apply (),

Js built-in object Math usage introduction. If you need it, you can refer to the attributes of the Math object. E: Value e, bottom of the natural logarithm LN10: the natural logarithm of 10 LN2: natural logarithm of 2 LOG2E: Base-2 logarithm of

When designing the front-end recently, we need to make the left and right divs highly adaptive. Here, clientHeight, which is highly used in jquery code, describes several different methods of obtaining and their differences. Recently, when designing

In JavaScript, the data storage location has an important impact on the overall performance of the Code. There are four data access types: Direct Volume, local variables, array items, and object member local variables, which can be understood as

I wrote a small plug-in yesterday and used this method. I don't quite understand the $. each () method. I checked the manual today and learned how to use arrays and element indexes and content. (I is the index, n is the content) The Code is as

Previously, I only knew that eval could parse strings. I just learned a little about it on the Internet. I posted it here. If I don't understand it, I 'd like to see it. The Code is as follows: Untitled document

Js + xml generates cascade drop-down box code. If you need code, you can refer to the variable var cityId = city id when you need to select it by default. Below is the js Code The Code is as follows: Function readxml (){Var XmlDoc = null;If

Here, you can obtain the tag name in uppercase, for example, A, DIV. If you need the tag name, refer to jquery to obtain the name of an element. For example: Dd $ ("# Aa"). xxxmethod returns to "p" How does jquery obtain the name of an element,

A few days ago, I received a requirement that China Unicom's online business office often needed special pages for publicity. However, due to the buttons on the special pages and links to various images, the provincial staff had no html Foundation