How To Add A Class To An Element In Javascript

The article uses a sample application to demonstrate DOM methods and properties and how to attach handlers to DOM events. The World Wide Web Consortium (WWW) has defined the Document Object Model (DOM) in different spec groups (DOM 1, Dom 2, and DOM level 3). The DOM represents HTML or XML as a tree that consists of nodes with different levels of properties and methods. Using the client language such as JavaScript, you can add, modify, and delete nodes in the tree ...

One of the more common problems when updating articles on your Web site is that the illustrations are too wide to make the entire page distorted. It would be too much trouble if you scaled and inserted each illustration first. I wrote a period of time before the article encountered this kind of thing, and later with CSS overflow and max-width properties temporarily solve the problem of page deformation. The benefits of this approach are simple, but the downside is the effect of destroying certain details. such as Overflow:hidden, meaning that when the inner element is wider than the parent frame, the part that is outside the width is hidden. Do this ...

Start the first article. The old rules, first boring talk about the weather. 11 long vacation, the weather finally began some autumn flavor, sitting in the room even feel the need for hot coffee. Said two years ago is also in the National Day holiday began to do Joomla document translation; Good time for a long holiday, always can spare a day or two, quiet nest in the home Do blog, learn to do something new, simply no more comfortable things. Say the right thing. Be prepared to focus on a few recent studies on the topic of "responsive web design", including concepts, practices, cases, and discussion of viewpoints. Compared to ...

The intermediary transaction SEO diagnoses Taobao guest cloud host technology Hall still has one hours to 2012, that can also have a bit of time to write a bit of spit things, hehe ... December 2011 is definitely my work since the maximum pressure of one months, has been busy to sleep less time, part-time reading less time, the body began to alarm, shoulder responsibility pressure I really breathless ... 　　As an ordinary north drift, in Beijing similar to me such a sea of humanity, especially in our industry. I love life very much, every minute is precious;

Summary CSS Firefox browser and IE compatible code compatible with your main compatibility is the syntax of the problem, you write CSS write specifications, and are compatible, the other is some of the browser's BUG, ​​send some tips for you Look, maybe useful. CSS skills 1, the vertical center of the div problem Vertical-align: middle; The line spacing increased to the same high as the entire DIV line-height: 200px; Then insert the text, the vertical center. The disadvantage is to control the content do not wrap ...

Intermediary transaction SEO diagnosis Taobao guest Cloud host Technology Hall @ Chen Zimu: Responsive Web Design, is a popular concept of web development, it is the use of flexible grid system, so that the display mode of the Web page can be accessed according to the screen size specifications and adaptive. By 2015, the number of users on the mobile side will grow from 800 million to 1.9 billion, which means that the current Web page we are designing for desktop browsers will have a very bad experience with their phones and tablets. ...

CSS browser compatibility is sometimes a headache, perhaps when you understand the skills and principles, you will find it is not difficult, from the online collection of ie7,6 and FIREOFX compatibility processing methods and collated. For web2.0 excesses, try to write code in XHTML format,  and doctype affect CSS processing, as the standard of the consortium, must add DOCTYPE reputation. CSS Tips 1.div Vertical center problem vertical-align:middle ...

To tell you the truth, we developed the mobile end of the project, the entire team of people are the first time, the initial project for the choice of native app and web app also debated, and finally comprehensive consideration, we chose the web (we chose the H5) development. But from the characteristics of these two development models, from the date of their birth began the constant debate, which is good or bad, this article does not discuss, but simply listed under my development problems and the final solution. 1. Responsive Web Design Speaking of this, mobile development facing the screen size that is called a abundant ...

Intermediary transaction SEO diagnosis Taobao guest Cloud host Technology Hall today we'll take a look at how to create a useful and powerful form that is created using the most popular technology HTML5 and CSS3 today, and can be validated by HTML5. View preview The first step: Planning the form function first, we have to plan for our form what function, in what form performance. In this example, we make a simpler message form. The required functions are as follows: Name ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host Technology Hall website promotion is every stationmaster all urgent concern matter. 　　Now we have sorted out the common 100 promotion creativity, everybody according to own ability condition and the external environment, picks the suitable method which oneself likes to use, hoped that has the help to each stationmaster. 1 QQ Group Website promotion method. With dozens of QQ, each QQ joins dozens of groups, sends the website every day. On average 50 qq* per QQ join 50 groups * Each group of 50 persons = 75000 people watch. If QQ more, join ...