RE: java script question

Fri, 26 Apr 2002 06:27:41 -0700 

Apologies if anyone had problems with the last version I sent - it had a
zipped attachement of an html file that was blocked by a few servers.


Les

-----Original Message-----
From: Wilson, Les J SI-FSIA 
Sent: 26 April 2002 14:25
To: Struts Users Mailing List
Subject: RE: java script question


Hi Jane,

I've done something similar, but use a form with hidden fields that gets
created at application initialisation and stored in the servletcontext.

I use the following to include the form in a jsp

<strutsbean:write name="<%= Constants.PRODUCT_LINE_FORM %>"
                  scope="application" 
                  filter="false" />

The HTML code below reads the corresponding hidden field when the first
choice is changed, parses its value and populates the second drop down.

Hope that helps.


<html>
  <head>
    <script language="javascript">


// Changes the product line based on the business line selected
function setProductLine ( formName, choice, target )
{
    var count=1;
    var val;

    var businessLine = eval ('document.forms["' + formName + '"].elements["'
+ choice + '"]');

    var id = businessLine.options[businessLine.selectedIndex].value;

    var productLine = eval ('document.forms["' + formName + '"].elements["'
+ target + '"];');


    productLine.options.length = 0;
    productLine.options[0] = new Option( "All Entries", "0", true, true );


    if (( id.charAt(0) != "0" ) && ( id.length > 0 ) )    {
        var bl = "BL_" + id;
        var field = document.forms["productLines"].elements["BL_" + id];

        if(field != null)    {
            val = field.value;
            if(val != null)  {
                var arrayList = val.split("|");
                items = arrayList.length;
                for ( var i=0; i<items; i++)    {
                    var id = arrayList[i];
                    var name = arrayList[i+1];
                    productLine.options[count] = new Option( name, id );
                    count++;
                    i++;
                }
            }
        }
    }
}
</script>
    <title>
      Test Drop downs
    </title>
  </head>
  <body class="content" onload="">
    <form name="activityCriteriaForm" method="POST"
action="/FS-APPS/eFinancePeople/activityList.do">

      <table cellpadding="0" cellspacing="0">
        <tr>
          <td width="170">
            Choose Entry
          </td>
          <td>
            <select name="businesslineid" size="1"         

onchange="setProductLine('activityCriteriaForm','businesslineid','productlin
eid');">
            <option value="0" selected="selected">&lt;NOT
SPECIFIED&gt;</option>
            <option value="1">Entry 1</option>
            <option value="2">Entry 2</option>
            <option value="3">Entry 3</option>
            <option value="4">Entry 4</option>
          </td>
          <td class="detailLabel" width="170">
            Other Options
          </td>
          <td>
            <select name="productlineid" size="1"><option
value=""></option></select>
          </td>
        </tr>

      </table>
    </form>
 

    <form name="productLines"><input type="hidden" name="BL_1"
value="115|Australia|45|Houston|47|London"><input type="hidden" name="BL_2"
value="106|Asia Pacific|104|Houston|102|London|117|Switzerland"><input
type="hidden" name="BL_3" value="121|East Zone Region Team|8|European Region
Team"><input type="hidden" name="BL_4" value="43|Accounting Flows|22|AF
2|113|Houston ABC|56|New Business"></form>

  </body>
</html>
Les 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: 25 April 2002 23:04
To: Struts User mailing list
Subject: java script question


This isn't exactly a struts question, but I've seen some similar questions
posed in this user list related to java script. What I'm trying to do is
display values in a drop down list based on a value selected from another
drop down. Depending upon what is selected, I will get the value selected
from the drop down, and dynamically populate the second drop down. I am
using the onchange java script attribute on my struts html tag that fires
an event when I select an item from the first drop down. I need to take the
value selected, use it as a key, and get data from a preloaded array that
has the data that I need for the second drop down. I know from reading
through the struts user list that I need to load the array in the java
script function to be able to get data from from it. The question is, how
do I load this array in my java script function?

Can the allMethodsTypes array get loaded in the java script function by
referencing it as a JSP expression?

Thanks,
Jane

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