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HTML definition List (DL) onclick event problem

Posted on 2009-04-08
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Last Modified: 2012-06-22
I am learning HTML and Javascript. I encountered an issue when I ran the attached code. If I select the bottom drop down list item, the debug message for the definition list (dl) event handler (markLoadPage) is popped up instead of the one (setColor) for the drop down list. This issue won't show if I move the drop down list to the top of the definition list. Is there anything wrong for the dl onclick event syntax? Thanks!
<html>
  <head>
    <title>Test</title>
    <script language="javascript"> <!--
 
      function markLoadPage( page_url )
      {
	    alert( 'markLoadPage() called!' );
      }
      
      function setColor()
     {
	  alert( 'setColor() called!' );
	  	  
	    var idx = document.getElementById( "color_list" ).selectedIndex;
	    if( idx > 0 )
	    {
	      document.bgColor = document.getElementById( "color_list" ).options[ idx ].value;
          }
      } 
//--></script>
  </head>
  <body>
   <form action="">
     <h2>Categories</h2>
     <dl><a href="red_rose.html" target="P3" onclick="markLoadPage( 'red_rose.html' )">Red rose</dl>
     <dl><a href="pink_rose.html" target="P3" onclick="markLoadPage( 'pink_rose.html' )">Pink rose</dl>
     <dl><a href="yellow_rose.html" target="P3" onclick="markLoadPage( 'yellow_rose.html' )">Yellow rose</dl>
     <dl><a href="white_rose.html" target="P3" onclick="markLoadPage( 'white_rose.html' )">White rose</dl>
     <dl><a href="orange_rose.html" target="P3" onclick="markLoadPage( 'orange_rose.html' )">Orange rose</dl>
     <dl><a href="lavender_rose.html" target="P3" onclick="markLoadPage( 'lavender_rose.html' )">Lavender rose</dl>
     <p/><p/>
     <select name="color_list" id="color_list" onchange="setColor()">
       <option value="prompt">Choose a colour</option>
       <option value="red">red</option>
       <option value="pink">pink</option>
       <option value="yellow">yellow</option>
       <option value="white">white</option>
       <option value="orange">orange</option>
       <option value="lavender">lavender</option>
     </select>
     <p/>
     <input type="button" class="bt_style" value="Save Selection" name="bt_save">  
   </form>
  </body>
</html>

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Question by:gs_kanata
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4 Comments
 
LVL 3

Accepted Solution

by:
GarthSnyder earned 200 total points
ID: 24104444
Your <a> tags are unclosed, so the browser sees them as extending all the way to the end of the document. So the entire <select> popup is included in the link for lavender_rose and therefore has an onclick event.

Just close the <a>'s with </a> and you should be fine.
0
 
LVL 42

Assisted Solution

by:David S.
David S. earned 200 total points
ID: 24104572
The HTML validator can be quite helpful: http://validator.w3.org/
0
 
LVL 75

Assisted Solution

by:Michel Plungjan
Michel Plungjan earned 100 total points
ID: 24105184
I also strongly advice to change


      function markLoadPage( page_url )
      {
            alert( 'markLoadPage() called!' );
            return false; // cancel the link
      }

and

 onclick="return markLoadPage( '...' )"
0
 
LVL 75

Expert Comment

by:Michel Plungjan
ID: 24108133
Why "B" ???
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