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How do I set pseudo class of an anchor tag as active through javascript.

Posted on 2009-07-02
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Last Modified: 2012-05-07
I have declared following style in my jsp.

<style type="text/css">
      a.anchorCSS:link, a.anchorCSS:visited {
        display: inline;
        width: 2em;  
        padding: 0.2em;
        line-height: 1.4;
        background-color: #ff0000;
        border: 1px solid white;
        color: #ffffff;
        text-decoration: none;
        text-align: center;
        font-family: Arial, Helvetica, sans-serif;
      font-size: 9pt;
      font-weight: bold;
}

a.anchorCSS:hover {
       background-color: #1998F9;
       color: #fff;
       font-family: Arial, Helvetica, sans-serif;
      font-size: 9pt;
      font-weight: bold;
}

a.anchorCSS:active {
      background-color: #035C9C;
       color: #ffff;
       font-family: Arial, Helvetica, sans-serif;
      font-size: 9pt;
      font-weight: bold;
}
     
      </style>

I am implementing pagination wherein page numbers are displayed as links with above CSS.
But after page numbers are displayed I want to mark the first page as active by default. In subsequent clicks the corresponding page numbers should be active.

I tried the following but its not working.

document.getElementById("1").className='anchorCSS:active';
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <base href="<%=basePath%>">

    

    <title>My JSP 'index.jsp' starting page</title>

	<meta http-equiv="pragma" content="no-cache">

	<meta http-equiv="cache-control" content="no-cache">

	<meta http-equiv="expires" content="0">    

	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

	<meta http-equiv="description" content="This is my page">

	<!--

	<link rel="stylesheet" type="text/css" href="styles.css">

	-->

	<style type="text/css">

	a.anchorCSS:link, a.anchorCSS:visited {

 	 display: inline;

 	 width: 2em;  

 	 padding: 0.2em;

  	line-height: 1.4;

  	background-color: #ff0000;

  	border: 1px solid white;

  	color: #ffffff;

  	text-decoration: none;

 	 text-align: center;

  	font-family: Arial, Helvetica, sans-serif;

	font-size: 9pt;

	font-weight: bold;

}

 

a.anchorCSS:hover {

 	background-color: #1998F9;

 	color: #fff;

 	font-family: Arial, Helvetica, sans-serif;

	font-size: 9pt;

	font-weight: bold;

}

 

a.anchorCSS:active {

	background-color: #035C9C;

 	color: #ffff;

 	font-family: Arial, Helvetica, sans-serif;

	font-size: 9pt;

	font-weight: bold;

}

	

	</style>

  </head>

  

  

 

  

  <script type="text/javascript">

function performPostSelection(totalRecords,pageSize,currentPage,pageAction){

 

	

	var pattern = /\d/g;

	

	if(pageAction=='F'){

		pagination(totalRecords,pageSize,currentPage);

		

			

	}

	if(pageAction=='P'){

		pagination(totalRecords,pageSize,currentPage);

		

	}

	if(pattern.test(pageAction)){

		

				

	}

	if(pageAction=='N'){

		pagination(totalRecords,pageSize,currentPage);

		

	}

	if(pageAction=='L'){

		pagination(totalRecords,pageSize,currentPage);

		

	}

}

 

function pagination(totalRecords,pageSize,currentPage){

  	

  	var windowSize = 5;

  	

  	var pageNode = document.getElementById('pageSequence');

  	var childs = pageNode.childNodes;

  	 	

  	// alert('numberOfChilds:'+childs.length);

  	/*

  	for(var j=0;j<childs.length;j++){

  		alert('Removing'+childs[j]);

  		alert('j:'+j);

  		pageNode=document.getElementById('pageSequence');

  		childs = pageNode.childNodes;

 		pageNode.removeChild(childs[j]); */

 		

 		while(childs.length >0){

 			// alert('Removing'+childs[0]);

 			// pageNode = document.getElementById('pageSequence');

 			pageNode.removeChild(childs[0]);

 			pageNode = document.getElementById('pageSequence');

 			childs = pageNode.childNodes;

 		}

 	

  	

  	// var pageNode = document.getElementById('pageSequence');

  	

  	var numberOfPages = Math.ceil(totalRecords/pageSize);

  	

  	

   	// alert('NumberOfPage:'+numberOfPages);

  	if(totalRecords > 0){

  		if(currentPage/windowSize >= 2){

  			var link = document.createElement('a');

  			link.setAttribute('href','javascript:performPostSelection('+(totalRecords)+','+(pageSize)+','+(1)+',\'F\')');

  			link.setAttribute('className','anchorCSS');

  			link.setAttribute('style','font-family: Arial, Helvetica, sans-serif;font-size: 8pt;font-weight: bold;');

  			link.innerHTML=' << ';

  			

  			

  			pageNode.appendChild(link);

  		}

  		if(currentPage/windowSize >= 1){

  			var previousPage=(windowSize*((Math.floor(currentPage/windowSize))-1))+1;

  			// alert('PreviousPage:'+previousPage);

  			var link = document.createElement('a');

  			link.setAttribute('href','javascript:performPostSelection('+(totalRecords)+','+(pageSize)+','+(previousPage)+',\'P\')');

  			link.setAttribute('className','anchorCSS');

  			link.setAttribute('style','font-family: Arial, Helvetica, sans-serif;font-size: 8pt;font-weight: bold;');

  			link.innerHTML=' < ';

  			pageNode.appendChild(link);

  		}

  		for(var i=currentPage;i<=numberOfPages;i++){

  			if(i==(currentPage+windowSize)){

  				break;

  			}

  			var link = document.createElement('a');

  			link.setAttribute('href','javascript:performPostSelection('+(totalRecords)+','+(pageSize)+','+i+','+i+')');

  			link.setAttribute('className','anchorCSS');

  			link.setAttribute('style','font-family: Arial, Helvetica, sans-serif;font-size: 8pt;font-weight: bold;');

  			link.innerHTML=i;

  			link.setAttribute('id',i);

  			pageNode.appendChild(link);

  			

  		} // end of for

  		

  		if((numberOfPages)/(currentPage+windowSize) >= 1){

  			var correction = 1;

  			if((currentPage%windowSize)==0){

  				correction=0;

  			}

  			var nextPage=(windowSize*((Math.floor(currentPage/windowSize))+correction))+1;

  			// alert('NextPage'+nextPage);

  			var link = document.createElement('a');

  			link.setAttribute('href','javascript:performPostSelection('+(totalRecords)+','+(pageSize)+','+(nextPage)+',\'N\')');

  			link.setAttribute('className','anchorCSS');

  			link.innerHTML=' > ';

  			pageNode.appendChild(link);

  		}

  		if((numberOfPages)/(currentPage+windowSize)+1 > 2){

  			var correction = 0;

  			if(((numberOfPages)%windowSize)==0){

  				alert(currentPage);

  				correction=1;

  			}

  			var link = document.createElement('a');

  			var firstWindowRec=currentPage%windowSize;

  			var multiplier=numberOfPages/(currentPage-firstWindowRec);

  			// alert('NumberOfPages:'+numberOfPages);

  			// alert('windowSize:'+windowSize);

  			// var lastWindow=(windowSize*(Math.floor(numberOfPages/windowSize)))+1;

  			var lastWindow=(windowSize*((Math.floor(numberOfPages/windowSize))-correction)+1);

  			// alert('lastWindow:'+lastWindow);

  			link.setAttribute('href','javascript:javascript:performPostSelection('+(totalRecords)+','+(pageSize)+','+(lastWindow)+',\'L\')');

  			link.setAttribute('className','anchorCSS');

  			link.setAttribute('style','font-family: Arial, Helvetica, sans-serif;font-size: 8pt;font-weight: bold;');

  			

  			

  			link.innerHTML=' >> ';

  			pageNode.appendChild(link);

  		}

  	}

  	document.getElementById("3").className='anchorCSS';

  } // end of function

</script>

  

  <body>

  	

    This is my JSP page3.

    <input type = 'button' value='SUBMIT' onclick='pagination(401,20,1)'>

   <!--  textarea scrolling="no" rows="10" cols="10" style="border-width:1px; whiteSpace:pre;">fhidoghoashgioadhgghghfgha

    ghadf;soghasdfioghioafgh</textarea> -->

    <form>

    

    <div id="x" name=x>

    <!--  label id="y" name="y"  onclick='pagination(344,20,1)'/>Check -->

    </div>

    <table border="1px">

      

    <tr>

    <td width="400px" align="center">

    	<div id="pageSequence"></div>

    	</td>

    </tr>

    </table>

    

   

    </form>

  </body>

</html>

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0
Comment
Question by:rcx_support
  • 3
  • 2
5 Comments
 
LVL 19

Assisted Solution

by:Albert Van Halen
Albert Van Halen earned 20 total points
ID: 24761574
You could modify your css 'a.anchorCSS:active' rule to a grouping rule having a.anchorCSS-active and apply that classname to the link
a.anchorCSS:active, a.anchorCSS-active {

    background-color: #035C9C;

    color: #ffff;

    font-family: Arial, Helvetica, sans-serif;

    font-size: 9pt;

    font-weight: bold;

}
 

document.getElementById("1").className='anchorCSS-active';

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0
 

Author Comment

by:rcx_support
ID: 24761669
I did the same as suggested by you. Thanks for the same.

But as you know I am implementing pagination.
On clicking search, link to first page should be marked active.
But when 2nd link is clicked, then link 2 should be active and 1st link should again fall back to 'link'.
0
 

Author Comment

by:rcx_support
ID: 24761946
Basically what I want is to change the state of anchor elements from link to active and CSS should get automatically selected as per my CSS declaration .

Something like this--

document.getelementByID("").style.backgroung="blue"; as for changing bg color.

document.getelementByID(").style.class.active='true';  // this behaviour I am loooking for.
0
 

Accepted Solution

by:
rcx_support earned 0 total points
ID: 24769784
Thanks Albert for your assistance. I figured out the solution.
I wanted to mark the first anchor tag as active manually  .

This is achieved by setActive() method.

The solution is --

document.getElementById("1").setActive();

 
0
 
LVL 19

Expert Comment

by:Albert Van Halen
ID: 24770207
Cool that you found out.
I keep the setActive in mind myself...
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