O'Reilly logo

JavaScript Application Cookbook by Jerry Bradenbaugh

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

dive.html

The user preferences have been changed. The time has come to see how to convert those recorded changes into visual realities. The process isn’t long, but the details can get a bit sticky. It’s probably obvious by now that the information will come from information stored in a cookie. That extracted information is used in three ways.

  • As a URL for a background image

  • As URLs and display text for links

  • As part of a stylesheet declaration for font family and size

We’ll encounter each use as we go. For now, soak in the code for dive.html, coming right up in Example 7.2.

Example 7-2. dive.html

 1 <HTML> 2 <HEAD> 3 <TITLE> 4 Your Take-A-Dive Links Page 5 </TITLE> 6 <SCRIPT LANGAUGE="JavaScript1.2" SRC="cookies.js"></SCRIPT> 7 <SCRIPT LANGUAGE="JavaScript1.2"> 8 <!-- 9 10 var newsNames = new Array(); 11 var indexNames = new Array(); 12 13 function getAttributes() { 14 var htmlStr = GetCookie('htmlPrefs'); 15 if (htmlStr == null) { 16 alert('Welcome. You must first set your user preferences.' + 17 'Please choose OK to load the User Settings page.'); 18 self.location.href = 'prefs.html'; 19 } 20 var htmlArray = htmlStr.split('-->'); 21 for (var i = 0; i < htmlArray.length; i++) { 22 var tagInfo = htmlArray[i].split('='); 23 if (tagInfo[0] != "") { 24 if (tagInfo[0].indexOf('newsNames') == 0) { 25 newsNames[newsNames.length] = tagInfo[1]; 26 } 27 else if (tagInfo[0].indexOf('indexNames') == 0) { 28 indexNames[indexNames.length] = tagInfo[1]; 29 } 30 else { eval(tagInfo[0] + ' = "' ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required