Tips for displaying the number of selected values in a select box label (e.g. Choose an Option)

I am currently using the jQuery multiselect API in my application to allow users to select multiple values. However, I am facing an issue where I need to fetch all the selected values when a button next to the multiselect box is clicked. Unfortunately, I have not been able to achieve this functionality yet. Below is the code snippet that I am working with.

<link rel="stylesheet" type="text/css" href="http://labs.abeautifulsite.net/archived/jquery-multiSelect/jquery.multiSelect.css" />
<link rel="stylesheet" type="text/css" href="style.css" />
<link rel="stylesheet" type="text/css" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1/themes/redmond/jquery-ui.css" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1/jquery-ui.min.js"></script>
<script type="text/javascript" src="http://labs.abeautifulsite.net/archived/jquery-multiSelect/jquery.multiSelect.js">

</script>

<h1>Form Submission Test</h1>

<p>I am testing to make sure that the correct values are being passed when the form is submitted.</p>
<select name="region" id="regionHome">
<option value="MDC">MDC</option>
<option value="LAC">LAC</option>
<option value="BRO/WPB">BRO/WPB</option>
<option value="NOE">NOE</option>
<option value="OTHER">OTHER</option>
</select>
<input type="button" value="Search" onclick="searchByDate()" class="searchButton">

<script>
$("#regionHome").multiSelect();

  function searchByDate() {

alert("There are " + $('input[name="regionHome[]"]:checked').length + " boxes selected");
var foo = [];
$('input[name="regionHome[]"]:checked').each(function (i, selected) {
    $( 'div.regionHome' ).replaceWith( "<p>Test</p>" );
    foo[i] = $(selected).val();
    alert(foo[i]);
   });
 }
   </script>

I am attempting to display the count of each selected value in a label as well. This means whenever a value is selected, the count will be updated in the label. You can check out the working example in the fiddle linked below:

View Working Example

Answer №1

Thank you for sharing the link to where the plugin is located. Upon inspection, it appears that the error is due to a simple typographical mistake.

Make sure to use the following code:

// remember to capitalize S in multiSelect
$("#regionHome").multiSelect();

Avoid using this code:

// all lowercase = not recommended
$("#regionHome").multiselect();

You can view the corrected code functioning on this JSFiddle: http://jsfiddle.net/gbtceq2m/


Now that the multiSelect function is working, please note that the original select "no longer exists" in the same form. It has been replaced by checkboxes that simulate a multiselect behavior. Therefore, adjust your selector to work with these checkboxes instead of the select options:

$('input[name="regionHome[]"]:checked').each(function (i, selected) {
    foo[i] = $(selected).val();
    alert(foo[i]);
});

You can see the updated functionality here: http://jsfiddle.net/gbtceq2m/1/

Answer №2

Is it possible to select multiple options in the drop-down menu?

If so, you will need to include the multiple attribute in your select drop down code like this:

<select class="js-region-list-box" name="region" id="regionHome" multiple="true">
    <option value="MDC">MDC</option>
    <option value="LAC">LAC</option>
    ...
</select>

Additionally, jQuery offers the .val() method which can retrieve the value from any form field.

For a select box with multiple selection enabled, using .val() will return all selected values separated by commas.

For more information on val(), visit this link

Based on the information above.

You could implement it as follows

html

<select class="js-region-list-box" name="region" id="regionHome" multiple="true">
    <option value="MDC">MDC</option>
    <option value="LAC">LAC</option>
    <option value="BRO/WPB">BRO/WPB</option>
    <option value="NOE">NOE</option>
    <option value="OTHER">OTHER</option>
</select>
<button class="js-regions">Get Regions</button>

js

var $regionListBox = $(".js-region-list-box");

$(".js-regions").on("click", function(e) {

    e.preventDefault();

    var selectedRegions = $regionListBox.val();    

    alert(selectedRegions);
});

Fiddle link: http://jsfiddle.net/Varinder/zdb06jp8/

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