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How do I add an IF within a javascript do-while loop?

Posted on 2011-09-21
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Medium Priority
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Last Modified: 2012-05-12
I have a do-while loop that loops for the maximum value of a localStorage variable. Each iteration creates a specific <li> statement. That logic works fine. I want to include an IF statement that will only allow the <li> statement to be created IF a specific condition of the localStorage variable is met.

If localStorage.[item + i] = "X" then I do NOT want to create the <li> statement. I simply want to increment the variable i and continue the do-while loop.

Here is the code that I am working with:

<ul>
   <script type="text/javascript">
   var i=1;
   do
   if localStorage["item" + i] = "X"
   {
    i++;
   }
   else
   {
    document.write("<li><a href='vcitemdetail.php?item="
       + localStorage["item" + i]
       + "&lsitag=" + "itag" + i
       + "&lsitem=" + "item" + i
       + "&lsdesc=" + "desc" + i
       + "'>"
       + localStorage["item" + i] + "-"
       + localStorage["desc" + i] +"</a></li>");
       i++;
   }       
 }
 while (i<=(parseInt(localStorage.trxCtr)));                        
</script>
</ul>
0
Comment
Question by:kbios
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3 Comments
 
LVL 40

Accepted Solution

by:
Gurvinder Pal Singh earned 2000 total points
ID: 36575124
check this code
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
	<script>
		var val = parseInt(localStorage.trxCtr);
		window.onload = function(){
			var html = "";
			for( var i = 1; i < val; i++)
			{
				if ( localStorage["item" + i] != "X" )
				{
					html += "<li><a href='vcitemdetail.php?item="
				   + localStorage["item" + i]
				   + "&lsitag=" + "itag" + i
				   + "&lsitem=" + "item" + i
				   + "&lsdesc=" + "desc" + i
				   + "'>"
				   + localStorage["item" + i] + "-"
				   + localStorage["desc" + i] +"</a></li>";
			   }       
			}
			document.getElementById("list").innerHTML = html;
		};
	</script>
</HEAD>

<BODY>
	<ul id="list">
	</ul>
</BODY>
</HTML>

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0
 

Author Closing Comment

by:kbios
ID: 36575459
Thanks. The solution you provided worked. I could have used you yesterday. After many hours of testing and threads with EE I abondoned the for loop. We couldn't get it to work. We were trying to use it in the BODY not the HEAD but couldn't get it to work.

Final thought. No doubt your code is more efficient BUT is there a way to nest the IF within the do..while?
0
 
LVL 40

Expert Comment

by:Gurvinder Pal Singh
ID: 36575484
check this one


var val = parseInt(localStorage.trxCtr);
window.onload = function(){
	var html = "";
	var i = 1; 
	do
	{
		if ( localStorage["item" + i] != "X" )
		{
			html += "<li><a href='vcitemdetail.php?item="
		   + localStorage["item" + i]
		   + "&lsitag=" + "itag" + i
		   + "&lsitem=" + "item" + i
		   + "&lsdesc=" + "desc" + i
		   + "'>"
		   + localStorage["item" + i] + "-"
		   + localStorage["desc" + i] +"</a></li>";
		}       
		i++;
	}while(i < val);
	document.getElementById("list").innerHTML = html;
};

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