Web Development and Design Foundations with XHTML, 5th Edition
(^542) Chapter 14 A Brief Look at JavaScript Save this file as documentwrite.html and view it in the browser. The text shou ...
14.6 Events and Event Handlers^543 FAQ I’ve seen some code examples and sometimes the event handlers are written in mixed case, ...
(^544) Chapter 14 A Brief Look at JavaScript HANDS-ON PRACTICE 14.3 Let’s practice using the onmouseoverandonmouseoutevent handl ...
14.6 Events and Event Handlers^545 Figure 14.11 Demonstration of onmouseoverwith mouseovertest.html Figure 14.12 Demonstration o ...
(^546) Chapter 14 A Brief Look at JavaScript 14.7Variables Sometimes we need to be able to collect data from the user and do som ...
14.7 Variables^547 <head> <title>JavaScript Practice</title> <meta http-equiv="Content-Type" content="text/ ...
(^548) Chapter 14 A Brief Look at JavaScript Edit the variablewrite.html document as follows: <!DOCTYPE html PUBLIC "-//W3C// ...
14.7 Variables^549 Edit the variablewrite2.html file as follows: <script type="text/javascript"> <!-- <![CDATA[ var ...
(^550) Chapter 14 A Brief Look at JavaScript Save the document and display it in the browser. The prompt box will appear, and yo ...
14.8 Introduction to Programming Concepts^551 Decision Making As we’ve seen, we can use variables in JavaScript. We may wish to ...
(^552) Chapter 14 A Brief Look at JavaScript FAQ What can I do when my JavaScript code doesn’t seem to be working? You can try t ...
14.8 Introduction to Programming Concepts^553 // ]]> --> </script> </body> </html> Save this document as ...
(^554) Chapter 14 A Brief Look at JavaScript Functions The Hands-On Practice 14.6 pops up the prompt box as soon as the page loa ...
14.8 Introduction to Programming Concepts^555 Here’s an example of a function definition: function showAlerts() { alert("Please ...
(^556) Chapter 14 A Brief Look at JavaScript Figure 14.17 The browser on the left shows the prompt box and input; the browser on ...
14.9 Form Handling^557 14.9Form Handling As you discovered in Chapter 9, the data from a Web form can be submitted to a CGI or a ...
(^558) Chapter 14 A Brief Look at JavaScript JavaScript code to indicate the value that will be sent back. Our example will retu ...
14.9 Form Handling^559 <div> <label for="userAge">Age:</label> <input type="text" name="userAge" id="userAg ...
(^560) Chapter 14 A Brief Look at JavaScript Let’s start by adding the code to validate the age. Edit the formvalidation.html fi ...
14.9 Form Handling^561 Click the OK button and type an age that is 18 or greater in the userAgeinput box. Click the submit butto ...
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