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Text Heading based on contents of Option dropdown

Posted on 2006-06-22
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Last Modified: 2010-04-06
Hi,

I'll simplify the problem I'm having to it's barest bones - hope it makes sense.

I have a form on which there is a "search text"  text box and a "search by" dropdown list.  Lets assume that this list only has two values :

  <select name="select">
    <option value="INT">Option A</option>
    <option value="NAM">Option B</option>
  </select>

However, the users can come to this form by two means.  Depending on which method they used to get here a different option value will be selected.

For instance if they had followed linka it would look like :

  <select name="select">
    <option value="INT" selected>Option A</option>
    <option value="NAM">Option B</option>
  </select>

if they had followed linkb it would look like

  <select name="select">
    <option value="INT">Option A</option>
    <option value="NAM" selected>Option B</option>
  </select>

How, using HTML or java can I add a line of text on the page which is linked to the selected option.  eg.  If I wanted to display :

"You have arrived here from linka"

or

"You have arrived here from linkb"

Hopefully that makes sense!
0
Comment
Question by:JoHarris
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5 Comments
 
LVL 10

Expert Comment

by:jagadeesh_motamarri
ID: 16962364
you just need to get the context path and print accordingly...

Pseudo Code: (JSP)

String str = request.getContextPath();
<%
if(str="lina")
out.write(You have arrived here from linka);
else
out.write(You have arrived here from linkb);
%>


____Jags.
0
 
LVL 10

Expert Comment

by:jagadeesh_motamarri
ID: 16962379
Or else simply you can just pass simple hidden variable and do a simple if condition on that...

____Jags.
0
 
LVL 30

Accepted Solution

by:
callrs earned 2000 total points
ID: 16963156
<html>
<!-- FORM: SUBMIT & EXTRACT FORM DATA   - DEMO        -->
<!-- Save the form as "c:\temp\p9.htm" & Then run it -->

<!-- By EE member www.experts-exchange.com/M_876428.html   
     with parse code from www.eggheadcafe.com/articles/20020107.asp "Parsing The Querystring with Javascript -->

<script type='text/javascript'>

 // Parse the query string (part after "?" in the URL)
function parseQ(q) {
      if(q.length > 1) this.q = q.substring(1, q.length);
      else this.q = null;
      this.keyValuePairs = new Array();
      if(q) {      for(var i=0; i < this.q.split("&").length; i++) {      this.keyValuePairs[i] = this.q.split("&")[i];      }      }
this.getKeyValuePairs = function() { return this.keyValuePairs; }

 // Retrieve a value for a key
this.getValue = function(s){
      for(var j=0; j < this.keyValuePairs.length; j++) {
            if(this.keyValuePairs[j].split("=")[0] == s)
                  return this.keyValuePairs[j].split("=")[1];
            }
      return false;
      }

 // Optional code - Array of all parameters
this.getParameters = function() {
      var a = new Array(this.getLength());
      for(var j=0; j < this.keyValuePairs.length; j++) {
            a[j] = this.keyValuePairs[j].split("=")[0];
            }
      return a;
      }
this.getLength = function() { return this.keyValuePairs.length; }

}
 // Query string for value
function qS(key){return unescape(page.getValue(key));}

function onLoadF(){
      page = new parseQ(window.location.search);
      displayWelcome();
      }

function displayWelcome(){
      var w1_=qS('w1');
      var w2_=qS('w2');
      var V_=qS('select');
      if(V_!='false'){
            if(V_=="INT") out_="You have arrived from link A";
            else if(V_=="NAM") out_="You have arrived from link B";
            else out_="Unknown: "+V_;
            }
      else
            {return false;}
      document.write(out_);
      if(w1_!='false') document.write("<BR>Your first word:  "+w1_)
      if(w2_!='false') document.write("<BR>Your second word: "+w2_)
      }

</script>
<body onload='onLoadF();');">

<!-- FORM below can/should appear on separate page, which would submit to this page to parse the FORM data.
     This form is here instead just for a simpler demo -->

<FORM action="p9.htm" name=f>
Word 1 <input name='w1'>
<P>
Word 2 <input name='w2'>
<input type=submit Value="Go!">
<select name="select">
    <option value="INT" selected>Option A</option>
    <option value="NAM">Option B</option>
  </select>
</FORM>

</body>
</html>
0
 

Author Comment

by:JoHarris
ID: 16976425
That's smashing thanks - the third reply was slightly more help in that I could see how it worked.  I'm sure your answer was great too jagadeesh but I'm just a bit simple for it!

The help is much appreciated!
0
 
LVL 10

Expert Comment

by:jagadeesh_motamarri
ID: 16976472
:-)
Thank You,
___Jags.
0

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