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POWhy won't my javascript code display a name of a famous person born on the current date?
 

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  1. POWhy won't my javascript code display a name of a famous person born on the current date?
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    <p>I am trying to display the current date and a name of a famous person who was born on the same date. I cannot get the name of the famous person to show up. Any ideas why? I would appreciate any help!</p> <p>Here is the HTML file:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;!DOCTYPE html PUBLIC " //W3C//DTD XHTML1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt; &lt;!-- Tutorial 10 Case Problem 4 Author: Collin Klopstein Date: December 5, 2013 This Web Page is created to display the current day's date and give a name of a famous person who is born on the same day. --&gt; &lt;title&gt;Happy Birthday&lt;/title&gt; &lt;link type="text/css" rel="stylesheet" href="date.css" /&gt; &lt;script type="text/javascript" src="functions.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="links"&gt; &lt;ul&gt; &lt;li&gt;&lt;a href="index.htm"&gt;Home&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="birthday.htm"&gt;Happy Birthday&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="dinnerplate.htm"&gt;Dinner Plate&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="tempest.htm"&gt;Shakespeare&lt;/a&gt;&lt;/li&gt; &lt;ul&gt; &lt;/div&gt; &lt;div id="pic"&gt; &lt;img src="logo.jpg" alt="happy birthday" /&gt; &lt;/div&gt; &lt;div id="star"&gt; &lt;script type="text/javascript"&gt; document.write("&lt;p&gt;Today's Date is&lt;/p&gt;"); document.write(showDate()); document.write("&lt;p&gt;A star born today&lt;/p&gt;"); document.write(showBirthDay(dayNumber())); &lt;/script&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Here is the JavaScript File:</p> <pre><code>/* New Perspectives on HTML and XHTML 5th Edition Tutorial 10 Case Problem 4 Function List: showDate Used to display the date in the form "Weekday, Month Day, Year" dayNumber Used to calculate the day number (1 - 366) of a given date showBirthDay Used to display a famous birthday falling on a given date */ var births = new Array(); births[1] = "J.D. Salinger (1919) - Author"; births[2] = "Isaac Asimov (1920) - Author"; ... // lots of birthdays here births[364] = "Jude Law (1972) - Actor"; births[365] = "Rudyard Kipling (1865) - Author"; births[366] = "Bonnie Prince Charlie (1720) - Attempted to seize England"; function showDate() { thisDate = new Date(); var thisWDay=thisDate.getDay(); var thisDay=thisDate.getDate(); var thisMonth=thisDate.getMonth(); var thisYear=thisDate.getFullYear(); var mName = new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October","November", "December"); var wdName = new Array("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"); return wdName[thisWDay]+", "+mName[thisMonth]+" "+thisDay+", "+thisYear; } function dayNumber() { thisDate = new Date(); var leapYearDate = thisDate.setFullYear(2004); var baseDate = new Date("January 1, 2004"); days = Math.floor((leapYearDate - baseDate)/(1000*60*60*24)+1); return days; } function showBirthDay(day) { return births[day]; } </code></pre>
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    1. USFelix Kling
    1. UShowdydoody
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    1. COFirst of all - don't use document.write() - http://stackoverflow.com/questions/802854/why-is-document-write-considered-a-bad-practice
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      1. POWhy won't my javascript code display a name of a famous person born on the current date?
      1. USMartin Majer
    2. COLook in the [JavaScript error console](http://www.netmagazine.com/tutorials/javascript-debugging-beginners) and tell what errors you see there and which lines they point to.
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      1. USJJJ
    3. COwhy are your dayNumbers counted against 2004 ? Did you check what is returned by dayNumber ?
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      1. USGameAlchemist
 

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