Ybglob define all meter and solutions of website designing and development. All internet marketer and web users with Web pages that are dynamically generated from database queries. You can imagine how exciting this is for researchers gathering and reporting information over the Web and for entrepreneurs who gave catalogs full of products and services to sell over the Web. Illustrates the use of JavaScript to provide database connectivity to Web applications. In this section I have provide an overview of the different ways in which JavaScript can be used for browser and server-side Web applications. JavaScript’s syntax is the same for both client (browser) and server programming; however the examples I will be using in this chapter mainly reflect how JavaScript relates to browser programming.
Embedding JavaScript in HTML
JavaScript statement can be included in HTML document by enclosing the statement between an opening tag, and closing tag. Within the opening tag, the language attribute is set to �java script� to identify the script as being java script as opposed to some other scripting language, such as Visual Basic script. The script tag is typically used as java script statements the script tag may be placed in either the head or the body of an HTML document. In many cases, it is to place the script tag in the head of a document to ensure that all java script definition have been made before the body of the document is displayed. You will learn more about this in the subsection.� Use of the Document Head,� later in this section. The traditional first exercise with any programming language is to write a program to display the text Hello World, This teaches to programmer to display out, a necessary feature of the most programs. The body of our example document contains a single element: a script, identified by the and tags. The opening script tag has the attribute language =�java script �to identify the script as a java script. The script has a single statement; documents write (�Hello World�) that write the text Hello World to the current document object. The text written by the script becomes the part of the HTML document display by the browser.
Other Language Attributes All java script �capable browser will process java script code if the language attribute is set to the following other values in order to limit the browser that able to process java script code. JavaScript Used to limit execution of a script to browsers that support java script. These browsers are Navigator3 and later Internet Explorer4 and later, Hot Java 2.0 and later and Opera 3.5and later. Java script. Used to limit execution of a script to browsers that support to java script 1.2. These browsers are Navigator 4 and later, Internet Explorer 4 and later Hot Java 3.0and later. JavaScript Used to limit execution of a script to browsers that support java script1.3. The browser is limited to Navigator 4.06 and later, Internet Explorer 5.0 and later, and Hot Java3.0 and later. JavaScript
