Section 17.1 Add an audio file using HTML Create a form using HTML Add text boxes using HTML Add radio buttons and check boxes using HTML Add a pull-down menu using HTML Add a text area using HTML Section 17.2 Identify client-side scripting languages Create a rollover button using JavaScript Identify server-side scripting languages Debug code

17.1 Adding Interactivity Using HTML Guide to Reading Main Ideas You can use HTML code to insert multimedia elements into a Web page. Other HTML tags allow you to create forms. Key Terms animated GIF radio button pull-down menu text area pp

17.1 Adding Interactivity Using HTML Adding Multimedia Elements animated GIF Inserting an audio file or an animated GIF file is very similar to inserting an image file. You can set a text link by including text within the anchor tag set. animated GIF A sequence of GIF images that are all stored in a single file along with an image transition delay value that controls the time each image will stay on the screen. (p. 441) pp

17.1 Adding Interactivity Using HTML Creating a Registration Form radio buttons pull-down menus text areas You create a registration form in HTML with text boxes, using preset options, like radio buttons, check boxes, pull-down menus, and text areas. radio button An interactive control that allows a user to select only one option from a list of options; also known as an option button. (p. 442) pull-down menu See drop- down box. (p. 443) text area Form element that allows the user to enter as much text as desired; also known as a scroll box. (p. 443) pp

Adding Interactivity Using HTML It is not difficult to create a form using HTML. Knowing which HTML tags to use can help you adjust form elements when you create a form in FrontPage. Creating a Registration Form 17.1

pp Adding Interactivity Using HTML Activity 17A – Adding an Audio File Using HTML (p. 440) Activity 17B – Adding Text Boxes Using HTML (p. 441) Activity 17C – Adding Radio Buttons and Check Boxes Using HTML (p. 442) Activity 17D – Adding a Pull-down Menu Using HTML (p. 443) Activity 17E – Adding a Text Area using HTML (p. 444) 17.1

17.2 Adding Interactivity Using Scripting Guide to Reading Main Ideas Scripting languages are used to supplement the capabilities of standard HTML. Scripting languages are divided into client-side scripts and server-side scripts. Key Terms client-side script object event event handler function server-side script variables conditional statements pp

17.2 Adding Interactivity Using Scripting Client-Side Scripts client-side scripts Some scripting languages, known as client-side scripts, are designed to be transferred to the user’s computer along with the HTML code. client-side script A script that is executed by the user’s Web browser. (p. 446) pp

17.2 Adding Interactivity Using Scripting Client-Side Scripts JavaScript is a popular scripting language for client-side scripts. Its code is composed of several elements, including: Objects Events Event handlers object In JavaScript, an element in a browser window; it can have properties that define it. (p. 446) event Anything that causes an effect to occur; often triggered by a user’s action. (p. 447) event handler The part of the script that responds to an event and defines the action that will occur when the event takes place. (p. 447) pp

17.2 Adding Interactivity Using Scripting Client-Side Scripts More Java elements: Functions Variables Conditional statements function In JavaScript, code that performs a specific task or action. (p. 447) variable Used by scripts to identify a value that will change when the script is executed. (p. 447) conditional statement A type of code that allows a script to respond differently depending on the action taken by the user. (p. 447) pp

17.2 Adding Interactivity Using Scripting Server-Side Scripts Server-side scripts Server-side scripts are run from the Web server. Web designers often use CGI to create Web-based forms that users fill out and then submit to the server. server-side script A script that is executed on the Web server, with the output transferred to the user’s computer as a Web page. (p. 448) pp

Adding Interactivity Using Scripting Server-side scripts can be used to change static content into dynamic content. A server-side script can retrieve data based on the user’s input and then generate a Web page that displays in the user’s browser. Server-Side Scripts 17.2

pp Adding Interactivity Using Scripting An alert statement tells you when a particular action is not occurring as specified. Alert statements are useful to Web developers during the testing phase. They are not helpful, however, to visitors to the Web site. Therefore, alert statements should be removed before the site is published. Debugging Code 17.2

pp Adding Interactivity Using Scripting Activity 17F – Creating a Rollover Button Using JavaScript (p. 447) 17.2

Chapter 17 For more resources on this chapter, go to the Introduction to Web Design Web site at webdesign.glencoe.com.webdesign.glencoe.com Resources