Get data from 2 comboboxes and add to a list

JavaScript
1

Hi I have a page like this

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>

<script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"></script>

<style>

.add-another-cat {
	
	/*float:right;	*/
	background-image:url(add_btn.png);
	width:18px;
	height:18px;
}


</style>

<!-- for list -->

  <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
  <script src="http://code.jquery.com/jquery-1.9.1.js"></script>
  <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
  <link rel="stylesheet" href="/resources/demos/style.css" />
  <style>
  #sortable { list-style-type: none; margin: 0; padding: 0; width: 60%; }
  #sortable li { margin: 0 5px 5px 5px; padding: 5px; font-size: 1.2em; height: 1.5em; }
  html>body #sortable li { height: 1.5em; line-height: 1.2em; }
  .ui-state-highlight { height: 1.5em; line-height: 1.2em; }
  </style>
  <script>
  $(function() {
    $( "#sortable" ).sortable({
      placeholder: "ui-state-highlight"
    });
    $( "#sortable" ).disableSelection();
  });
  </script>

</head>

<body>

<script language="javascript">
//<![CDATA[
$(window).load(function(){
$('.add-another-cat').click(function(event){
             event.preventDefault();
             var $orDiv = $('.new-category:last').after($('#clone').clone().removeAttr('id').show());

});
$('.new-categories').html($('#clone').clone().removeAttr('id').show());
});//]]>

</script>

<div id="clone" class="new-category" style="display:none;">
    <select class="category-select" name="localprojects">
    <option value="1">mca 1</option>
	<option value="2">mca 2</option>
	
    </select>
    <===>
    <select class="category-select" name="remoteprojects">
    <option value="z1">zoho 1</option>
	<option value="z2">zoho 2</option>
	
    </select>

    <select class='category-select-sub' style="display:none">
        <!-- loaded from ajax -->
    </select>



</div>
<div class="new-categories"  style="display: inline-block;">
</div>
    <a href="#" class="add-another-cat smallest" style="display: inline-block;"></a>

<ul id="sortable">
  <li class="ui-state-default">Item 1</li>
  <li class="ui-state-default">Item 2</li>
  <li class="ui-state-default">Item 3</li>
  <li class="ui-state-default">Item 4</li>
  <li class="ui-state-default">Item 5</li>
  <li class="ui-state-default">Item 6</li>
  <li class="ui-state-default">Item 7</li>
</ul>

</body>
</html>

I like to get the selected values from the 2 comboboxes, combine them together as a string and add to the list below.

For example: if user selects “mca 1” (value “1”) and “zoho 2” (value “z2”) then the following html code should be auto generated.

<li class="ui-state-default" value="1-z2">mca 1 - zoho 2</li>

Would you please tell me how to do this? Thanks.

2

Hi there,

Welcome to the forums :slight_smile:

I would do it like this:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
  <!-- http://www.sitepoint.com/forums/showthread.php?1173132-Get-data-from-2-comboboxes-and-add-to-a-list -->
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Untitled Document</title>
    <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
    <link rel="stylesheet" href="/resources/demos/style.css" />
    <style>
      #sortable { list-style-type: none; margin: 0; padding: 0; width: 60%; }
      #sortable li { margin: 0 5px 5px 5px; padding: 5px; font-size: 1.2em; height: 1.5em; }
      html>body #sortable li { height: 1.5em; line-height: 1.2em; }
      .ui-state-highlight { height: 1.5em; line-height: 1.2em; }
      div{ padding: 10px; }
    </style>
  </head>
  
  <body>
    <div>
      <select class="category-select" name="localprojects">
        <option value="1">mca 1</option>
        <option value="2">mca 2</option>
      </select>
      <===>
      <select class="category-select" name="remoteprojects">
        <option value="z1">zoho 1</option>
        <option value="z2">zoho 2</option>
      </select> 
         
      <button id="addButton">Add item</button>
    </div>
    
    <ul id="sortable">
      <li class="ui-state-default">Item 1</li>
      <li class="ui-state-default">Item 2</li>
      <li class="ui-state-default">Item 3</li>
      <li class="ui-state-default">Item 4</li>
      <li class="ui-state-default">Item 5</li>
      <li class="ui-state-default">Item 6</li>
      <li class="ui-state-default">Item 7</li>
    </ul>
    
    <script src="http://code.jquery.com/jquery-1.9.1.js"></script>
    <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
    <script>
      $("#sortable").sortable({ placeholder: "ui-state-highlight" }).disableSelection();
      $("#addButton").on("click", function(){
        var s1 = $(".category-select").eq(0).find("option:selected"),
            s2 = $(".category-select").eq(1).find("option:selected"),
            newText = s1.text() + " - " + s2.text();
            newValue = s1.val() + "-" + s2.val();
            listElement = $("<li>", {class: "ui-state-default", text: newText, value: newValue});
          
        $("#sortable").append(listElement);
      });
    </script>
  </body>
</html>

Here’s a demo.

BTW, please note that you are including jQuery twice.
At best this is superfluous, at worst this is going to make things behave unexpectedly.

3

it works :tup: thanks :smiley: Would you please also tell me how to check if an item already existing in the list before inserting it? That’d be great :slight_smile: Thanks. sorry I’m new in jquery.

4

What would be the criteria to check?
The value of the option tag? The text value? Both?

5

sorry I forgot. I’d like to check based on the option value. Thanks. :slight_smile:

6

I’d do it like this:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
  <!-- http://www.sitepoint.com/forums/showthread.php?1173132-Get-data-from-2-comboboxes-and-add-to-a-list -->
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Untitled Document</title>
    <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
    <link rel="stylesheet" href="/resources/demos/style.css" />
    <style>
      #sortable { list-style-type: none; margin: 0; padding: 0; width: 60%; }
      #sortable li { margin: 0 5px 5px 5px; padding: 5px; font-size: 1.2em; height: 1.5em; }
      html>body #sortable li { height: 1.5em; line-height: 1.2em; }
      .ui-state-highlight { height: 1.5em; line-height: 1.2em; }
      div{ padding: 10px; }
    </style>
  </head>
  
  <body>
    <div>
      <select class="category-select" name="localprojects">
        <option value="1">mca 1</option>
        <option value="2">mca 2</option>
      </select>
      <===>
      <select class="category-select" name="remoteprojects">
        <option value="z1">zoho 1</option>
        <option value="z2">zoho 2</option>
      </select> 
         
      <button id="addButton">Add item</button>
    </div>
    
    <ul id="sortable">
      <li class="ui-state-default">Item 1</li>
      <li class="ui-state-default">Item 2</li>
      <li class="ui-state-default">Item 3</li>
      <li class="ui-state-default">Item 4</li>
      <li class="ui-state-default">Item 5</li>
      <li class="ui-state-default">Item 6</li>
      <li class="ui-state-default">Item 7</li>
    </ul>
    
    <script src="http://code.jquery.com/jquery-1.9.1.js"></script>
    <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
    <script>
      function elementAlreadyExists(val){
        var elementAlreadyExists = false;
        $("#sortable > li").each(function(){
          var currVal = $(this).data("value");
          if(currVal === val){
            elementAlreadyExists = true;
            return;
          }
        });
        return elementAlreadyExists;
      }
      
      $("#sortable").sortable({ placeholder: "ui-state-highlight" }).disableSelection();
      $("#addButton").on("click", function(){
        var s1 = $(".category-select").eq(0).find("option:selected"),
            s2 = $(".category-select").eq(1).find("option:selected"),
            newText = s1.text() + " - " + s2.text();
            newValue = s1.val() + "-" + s2.val();
            listElement = $("<li>", {class: "ui-state-default", text: newText, 'data-value': newValue});
        
        if (elementAlreadyExists(newValue)){
          alert("Already Exists!");
        } else {
          $("#sortable").append(listElement);
        }
      });
    </script>
  </body>
</html>

Also AFAIK, a <li> element doesn’t have a value attribute, so it is better to store the value as a data attribute (which I have reflected in my new code).

Edit:

Looks like I was wrong: http://html5doctor.com/ol-element-attributes/

7

thanks :slight_smile: it works :tup: