JavaScript

In fact, there are many descriptions about querySelector and querySelectorAll. Here we mainly make a record. At the beginning, many people will use the jquery selector to compare the two APIs (I am also ), the similarities and differences are

Recently I encountered a problem. When using jquery to write a timer, there will always be an error indicating that fn does not exist. When I write a timer, I am always used to direct SetInterval ("fn ()", 2000 ); Recently encountered a problem.

Many articles about the differences between the substr, substring, and slice methods have been found online, and the content is basically the same. Then, I moved the code in one of the articles to a local machine for testing and found that the test

A closure is an expression (usually a function) that has many variables and is bound to these variables. Therefore, these variables are part of the expression, this article will give you a deep understanding of the concept of Javascript closures in

When you use JavaScript scripts to obtain the size of an element, you need to understand several attributes. Otherwise, it will be tricky. In the past, I have memorized these attributes and seldom really understood them. If I forget it, I will check

Use constructors to define class attributes (fields) and use prototype to define class methods. There is a third method. This method seems to be widely used by many people. Take the advantages of the first two methods: A. Use constructors to define

I am constantly using the astinus development process. Some JS Code has been pasted in, so an error is displayed on the page. Apparently, I put the source code directly into the html text-Well, after I switched from 05 years to online games, I have

Shells (the author of this article) also belong to the type that will just use JQuery. There are also many problems encountered during the learning process, especially when getting started. I have been preparing to write some articles about JQuery,

In the demand for "loading on demand", we often judge how to judge the completion of Script Loading by returning a callback function when the script is loaded? We can use onload to determine the loaded JS object (js. onload), this method is

The fastest selector in jQuery is the ID selector because it comes directly from the getElementById () method of JavaScript. 1. always inherit from the ID Selector The fastest selector in jQuery is the ID selector because it comes directly from the

The ctl00_MainContent_grvDevelopKit is in the background code & lt; table & gt. /* Select All */ Function SB002SelectAll () { Var table = document. getElementById ("ctl00_MainContent_grvDevelopKit "); For (var I = 1; I { Var input = table.

The JS class is automatically completed, and the user experience is better. Encapsulated into a class for ease of use. Site 1. encapsulated JS files //************************************** ****************** // Creation date: // OPERATOR: oloen //

Some attributes are different in different browsers. The following is a summary of ie and firefox. Png transparentAlphaImageLoader Filter: progid: DXImageTransform. Microsoft. AlphaImageLoader (enabled = bEnabled, sizingMethod = sSize, src = sURL)

Statements about object-oriented programming now have the strength to learn the following about object-oriented programming, but they actually belong to the content of the previous chapter. The with statement specifies the default object for one or

Chapter 4 Case Study: childNodes attribute of the javascript Art Museum: An array containing all the child elements of the given element node is returned. ChildType attribute: The returned array contains all types of nodes. NodeValue attribute:

Js operation Xml (send Xml to the server to process the Xml returned by the server) (currently only valid under IE) Foreground: The Code is as follows: Js operation Xml (send Xml to the server and process the Xml returned by the server) (valid

JQuery operates Xml entry-level code XMLFile. xml The Code is as follows: 1 Content1 2 Content2 JqXmlFirst. aspx The Code is as

Array is used in js. For example, if multiple inputs with the same name are dynamically generated, You need to determine whether the input is an array. if (document. mylist. length! = "Undefined") {} This usage is incorrect. Correct is if (typeof

Today, I encountered an interesting problem when I was working on the enterprise level function of Jingdezhen. On a jsp page, I need to convert a java string into a boolean type of js. Originally, I thought that the boolean type conversion of js is

Today, a friend asked me about how to use JAVASCRIPT to transfer data between various forms on the page. I wrote it before, but I never paid attention to it. Today I have summarized it, I hope to give you some help and summarize the previous and