JavaScript

The hasOwnProperty method returns a Boolean value indicating whether an object has a property with the specified name. HasOwnProperty Method Returns a Boolean value indicating whether an object has a property of the specified name. Object.

When I was a beginner at JS, I knew about this function, but I never knew about its purpose. I always kept one eye closed and one eye closed. This time I will take a deeper look at the role of this function. The function of eval is actually very

In Javascript, function is the first type of Javascript. When we write down a function, we actually create a function-type entity. Just as we can write in this form: The Code is as follows: Function Hello (){Alert ("Hello ");}Hello ();Var Hello =

What is a page Mask )? I have seen jQuery's Lightbox plug-in, and it will not be unfamiliar. It is to create a transparent layer on the page to cover all the interior of the page. In Ajax applications, a Mask is created before a Dialog (displayed in

For some coordinate and position analysis on the page, it is generally helpful for friends who need to control the location of the layer. For more information, see. OffsetTop can be used to obtain the position of the HTML element from the top or the

After the components inside the Panel are added, how to discharge the components becomes a problem. Extjs Layout is designed to solve this problem. In fact, the best place to learn Layout is Extjs's official website example Extjs Layout

A data table needs to be displayed during project creation. Because we firmly use reasonable labels to represent suitable content, we use table, and the tragedy begins. First of all, the erratic border of collapse, ie6 has a difference from other

A panel represents a relatively independent area on the page. It is not easy to use the traditional html + css to build a flexible and unified area. Extjs encapsulates the Panel for us. The Panel has a uniform title header, Panel body, and the

If ExtJs is used, you may know that many UI elements are integrated in ExtJs, which makes it easy for us to use. There are two methods, mask () and unmask (). These two methods add a mask layer and a notification message implementation on the

Drag and Drop tags on html pages. For more information, see. 1. Set the label style (such as img and p): Set position to absolute, for example: 2. Use a temporary element to record the label status. Set the display of the temporary element to none

JQuery is so popular and widely used by almost everyone from large companies to personal blogs, because it is quite simple to get started and use, it also provides us with some amazing features that people don't know. JQuery is so popular and

Js gets the server time in two ways. The code is relatively simple. For more information, see. Sometimes js is used to get the server time. System. DateTime is usually used. The method is as follows: The Code is as follows:

In the article about the perfect method for judging whether iframe is loaded, Feifei adds the following two points. Perfect Method for judging whether iframe is loaded IE supports iframe onload events, but they are invisible and need to be

JQuery is a good framework. The following summarizes five tips that every website developer should know. They are all very good and can often be used. 1. Disable right-click menu The Code is as follows: $ (Document). ready (function (){$ (Document)

The latest CKFinder1.4 version has provided support for CKEditor3.0 CKFinder 1.4: http://ckfinder.com/ CKEditor3.0: http://ckeditor.com/ Instance: The Code is as follows:

Finding a function called forEach in Base2 is the best implementation I have ever seen. Dig out and analyze it. It can traverse various common objects, strings, arrays, and arrays of classes. If the object of the original browser has implemented

Because of the language features of JavaScript, We can dynamically add and delete attributes to common objects. Therefore, objects can also be seen as a special set of JS. Although the key of this set can only be of the String type, unlike various

According to my observations on the Forum, there are many questions when xtype is used. Some people even ignore xtype, or do not know what it is. So I decided to elaborate on this xtype concept. Preface According to my observations on the Forum,

Many navigation websites often see some parameters added to the style test or js files, mainly because you re-load the new files for some pages that are not updated frequently. Js and css files loaded on pages often contain parameters, such:

This article will discuss the data cache implementation principle of jQuery, the most popular JavaScript framework, which is a new feature that jQuery1.2.3 has introduced. As a programmer, when talking about "cache", you can easily think of "client (