HTML DOCUMENT OBJECT MODEL

Leapfrog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Duck and Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Compatibility Issues Today . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Developing a Scripting Strategy . . . .[r]

dle newer JavaScript features. But you can sometimes script around these incom-patibilities (as described throughout the language reference in Part IV).Document object modelIf NN and IE are close in core JavaScript language compatibility, nothing could befurther from the truth when it[r]

ptg611chapter15The W3C DOM and JavaScript15.1 The W3C DOMThe W3C DOM provides JavaScript applications a standard way to access all the ele-ments of the document. Although the DOM was designed to help developers navigate an XML document, HTML documents can be navigated in the same way.[r]

ments as nodes of a hierarchical tree, the document object is the root node — thatfrom which all other nodes grow.Because the document object isn’t explicitly represented in an HTML documentby tags or any other notation, the original designers of JavaScript and object<[r]

shortcut for subm Submit button is never necessary (unless the JavaScript program is working witprogram, of cript, a form can have any number of push buttons with event handle number of actions when clicked. In previous chapters, The cli reference section of this book for forms and forhe Definitive[r]

descriptions follow a more functional order. You can open the actual source codefile to see where the various functions are positioned. To best understand thisapplication, seeing the “how” rather than the “where” is more important. Also,many of the code lines (even some single expressions) are too w[r]

&lt;h3&gt;Hello, world!&lt;/h3&gt; &lt;/body&gt; &lt;/html&gt; From the Library of WoweBook.Comptg10 Chapter 1 • Introduction to JavaScriptcontrol over selected elements, it is more likely they will be found in separate .css files to let you produce sweeping changes o[r]

Although early JavaScript authors initially treated client-side scripting as oneenvironment that permitted the programming of page elements, the scene haschanged a bit as the browsers have matured. Today, a clear distinction existsbetween specifications for the core JavaScript language and for the el[r]

Two final notes about what DHTML actually is: DHTML (the scripting part of it) relies on something called a Document Object Model (DOM) to identify, create, and manipulate elements on a web page. For example, you have to be able to identify an element, such as an image, in order[r]

Tạo HTML từ XML và XSL Thông thường, nếu bạn định nghĩa bên trong một XML file rằng nó cần một XSL để display thì Internet Exporer 5.5 sẽ tự transform XML dựa theo XSL và display kết quả trong browser cho bạn. Trong trường hợp ấy nếu bạn View Source của Webpage bạn chỉ đọc đuợc XML source mà thôi. C[r]

Chương 1: Giới thiệu về jQueryVới sự phát triển rất mau lẹ của Internet, người dùng ngày càng quan tâm hơn ñến hình thức của mộttrang web. Trước ñây một trang web chỉ cần có banner, nội dung và ít footer hời hợt là ñã ñược cho làmột trang web hoàn chỉnh. Nhưng bây giờ trang web ñó phải có banner bắt[r]

phép của MIT và GPL. Thư viện jQuery tương thích với nhiều trình duyệt (Internet Explorer 6+, Firefox 2+, Opera 9+, Safari 2+ và Chrome). Cộng đồng phát triển mạnh mẽ và được sử dụng rộng rãi như Dell, ESPN, BBC, Reuters, WordPress, Digg, … Những gì Jquery có thể làm: Hướng tới các thành phần tro[r]

Chương 1: Giới thiệu về jQueryVới sự phát triển rất mau lẹ của Internet, người dùng ngày càng quan tâm hơn ñến hình thức của mộttrang web. Trước ñây một trang web chỉ cần có banner, nội dung và ít footer hời hợt là ñã ñược cho làmột trang web hoàn chỉnh. Nhưng bây giờ trang web ñó phải có banner bắt[r]

enced by a data island in an HTML page, the processor automatically checksthe document for well-formedness and—if the document contains a documenttype declaration—for validity. After the processor loads the document (or at-tempts to load the document; it will quit if it e[r]

tested and debugged as it is written. Although the requirements generallyshould be known before code writing begins, oen this is not the case. In fact,an empirical law of soware engineering states the following:e requirements of any system are a function of the experience gained indeveloping and[r]

Ways of Utilizing XML in .NET You can utilize XML from within .NET in hundreds of ways. The following list spells out some of those ways. The first three ways will be shown in some of the How-Tos later in this chapter. • Utilizing the XML Document Object Model (DOM) • Reading XM[r]

document.write() method in a deferred script,be sure to include a document.close() method. Failure to do this may causeimages and forms not to appear. Also, any document.write() method invokedlater will only append to the page, rather than clear the existing content to writeanew[r]

maxLength and sizeproperties. This value is normally set initially via the MAXLENGTH attribute of theINPUT element.Example on the CD-ROMRelated Items: size property.nameValue: Identifier String Read/WriteNN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5Compatibility ✓✓ ✓✓ ✓ ✓ ✓✓✓Text object names a[r]

you put the file.)DOM interfacesThe DOM defines several Java interfaces. Hereare the most common:• Node: The base datatype of the DOM.• Element: The vast majority of the objectsyou’ll deal with are Elements.• Attr: Represents an attribute of an element.• Text: The actual content of an Element orAttr[r]

68Part III ✦ Document Objects ReferenceBecause every event handler operates as both property and method, I don’t listthese properties and methods as part of each object’s definition in the next chap-ters. You can be assured this feature works for every JavaScript object that has[r]