Troubleshooting Limitation Problem with Bootstrap Multiselect

Question

Troubleshooting Limitation Problem with Bootstrap Multiselect

I recently created a multiselect dropdown menu using Bootstrap Multiselect. I successfully set a limit on the number of options that can be selected (in this case, 5), and once the limit is reached, the additional options become disabled. Everything works perfectly, except when attempting to select more than 5 options using the SHIFT key. In this scenario, my jQuery code to prevent further selection does not work, allowing me to exceed the limit. Any suggestions or solutions would be greatly appreciated.

JSFIDDLE

 jQuery('#soft_skill_list').multiselect({
        enableFiltering: true,
        maxHeight:400,
        enableCaseInsensitiveFiltering:true, 
        nonSelectedText: 'Soft Skills *', 
        numberDisplayed: 2, 
        selectAll: false, 
        onChange: function(option, checked) {
                // Get selected options.
                var selectedOptions = jQuery('#soft_skill_list option:selected');
 
                if (selectedOptions.length >= 5) {
                    // Disable all other checkboxes.
                    var nonSelectedOptions = jQuery('#soft_skill_list option').filter(function() {
                        return !jQuery(this).is(':selected');
                    });
 
                    nonSelectedOptions.each(function() {
                        var input = jQuery('input[value="' + jQuery(this).val() + '"]');
                        input.prop('disabled', true);
                        input.parent('li').addClass('disabled');
                    });
                }
                else {
                    // Enable all checkboxes.
                    jQuery('#soft_skill_list option').each(function() {
                        var input = jQuery('input[value="' + jQuery(this).val() + '"]');
                        input.prop('disabled', false);
                        input.parent('li').addClass('disabled');
                    });
                }
            }});

   
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" ></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.13/js/bootstrap-multiselect.min.js"></script>

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.13/css/bootstrap-multiselect.css" />

<select name="soft_skill_list[]" class="soft_skill_list"  id="soft_skill_list" multiple="multiple">
  <option>Analysing data</option>
  <option>Banquets Operations</option>
  <option>Concierge Operations</option>
  <option>Customer service experience</option>
  <option>Measuring and calculating</option>
  <option>Micros</option>
  <option>Numeracy Skills </option>
  <option>Opening Hotels</option>
  <option>Opera</option>
  <option>Outside catering</option>
  <option>Pre-opening</option>
  <option>Procedures </option>
  <option>Proficiency in computer programming</option>
  <option>Public speaking experience </option>
  <option>Reservation</option>
  <option>Restaurants operations</option>
  <option>Revenue Analysis</option>
  <option>Rooms Division</option>
  <option>Safety and Security</option>
  <option>Sales administration</option>
  <option>Sales Operations</option>
  <option>Social Media</option>
</select>

Please refer to the image here https://i.stack.imgur.com/5l5iX.png

javascript jquery html css twitter-bootstrap

Answer 1

Answer №1

To prevent the Shift key from being used when clicking on a list option, you can use the following jQuery code:

For reference, please visit -> JSFIDDLE

var shiftClick = jQuery.Event("click");
shiftClick.shiftKey = true;

    $(".multiselect-container li *").click(function(event) {
        if (event.shiftKey) {
           //alert("Shift key is pressed");
            event.preventDefault();
            return false;
        }
        else {
            //alert('No shift hey');
        }
    });

Answer 2

To prevent the Shift key from being used when clicking on a list option, you can use the following jQuery code:

For reference, please visit -> JSFIDDLE

var shiftClick = jQuery.Event("click");
shiftClick.shiftKey = true;

    $(".multiselect-container li *").click(function(event) {
        if (event.shiftKey) {
           //alert("Shift key is pressed");
            event.preventDefault();
            return false;
        }
        else {
            //alert('No shift hey');
        }
    });

Answer 3

Answer №2

It is important to validate each selection individually if there are more than 5 options chosen.

if (selectedOptions.length >= 5) {
  if (selectedOptions.length > 5) {
    // Display error message
  } else {
    // Continue with current process
  }

When checkboxes are selected one by one, the total number of selections can never exceed 5.

Answer 4

It is important to validate each selection individually if there are more than 5 options chosen.

if (selectedOptions.length >= 5) {
  if (selectedOptions.length > 5) {
    // Display error message
  } else {
    // Continue with current process
  }

When checkboxes are selected one by one, the total number of selections can never exceed 5.

Answer 5

Answer №3

In order to prevent the disabling of checkboxes in other multiselect controls on the same page that have the same option value, it is important to ensure that the correct selector function is used when enabling/disabling the checkboxes. This can be achieved by replacing the following line of code:

var input = jQuery('input[value="' + jQuery(this).val() + '"]');

with this:

var input = jQuery('#soft_skill_list + .btn-group input[value="' + jQuery(this).val() + '"]');

Failure to make this change may result in unintended consequences and affect checkboxes in multiple multiselect controls.

The updated implementation should look like this:

jQuery('#soft_skill_list').multiselect({
    enableFiltering: true,
    maxHeight:400,
    enableCaseInsensitiveFiltering:true, 
    nonSelectedText: 'Soft Skills *', 
    numberDisplayed: 2, 
    selectAll: false, 
    onChange: function(option, checked) {
            // Retrieve selected options.
            var selectedOptions = jQuery('#soft_skill_list option:selected');

            if (selectedOptions.length >= 5) {
                // Disable all remaining checkboxes.
                var nonSelectedOptions = jQuery('#soft_skill_list option').filter(function() {
                    return !jQuery(this).is(':selected');
                });

                nonSelectedOptions.each(function() {
                    var input = jQuery('#soft_skill_list + .btn-group input[value="' + jQuery(this).val() + '"]');
                    input.prop('disabled', true);
                    input.parent('li').addClass('disabled');
                });
            }
            else {
                // Enable all checkboxes.
                jQuery('#soft_skill_list option').each(function() {
                    var input = jQuery('#soft_skill_list + .btn-group  input[value="' + jQuery(this).val() + '"]');
                    input.prop('disabled', false);
                    input.parent('li').addClass('disabled');
                });
            }
        }});

Answer 6

In order to prevent the disabling of checkboxes in other multiselect controls on the same page that have the same option value, it is important to ensure that the correct selector function is used when enabling/disabling the checkboxes. This can be achieved by replacing the following line of code:

var input = jQuery('input[value="' + jQuery(this).val() + '"]');

with this:

var input = jQuery('#soft_skill_list + .btn-group input[value="' + jQuery(this).val() + '"]');

Failure to make this change may result in unintended consequences and affect checkboxes in multiple multiselect controls.

The updated implementation should look like this:

jQuery('#soft_skill_list').multiselect({
    enableFiltering: true,
    maxHeight:400,
    enableCaseInsensitiveFiltering:true, 
    nonSelectedText: 'Soft Skills *', 
    numberDisplayed: 2, 
    selectAll: false, 
    onChange: function(option, checked) {
            // Retrieve selected options.
            var selectedOptions = jQuery('#soft_skill_list option:selected');

            if (selectedOptions.length >= 5) {
                // Disable all remaining checkboxes.
                var nonSelectedOptions = jQuery('#soft_skill_list option').filter(function() {
                    return !jQuery(this).is(':selected');
                });

                nonSelectedOptions.each(function() {
                    var input = jQuery('#soft_skill_list + .btn-group input[value="' + jQuery(this).val() + '"]');
                    input.prop('disabled', true);
                    input.parent('li').addClass('disabled');
                });
            }
            else {
                // Enable all checkboxes.
                jQuery('#soft_skill_list option').each(function() {
                    var input = jQuery('#soft_skill_list + .btn-group  input[value="' + jQuery(this).val() + '"]');
                    input.prop('disabled', false);
                    input.parent('li').addClass('disabled');
                });
            }
        }});

Troubleshooting Limitation Problem with Bootstrap Multiselect

Answer №1

Answer №2

Answer №3

Similar questions

utilize jquery ajax to input various data

The event SelectedIndexChanged is not triggering as expected on dropdown lists that are created dynamically

The scroll event listener activates based on the distance I have scrolled

Utilizing 'this' in jQuery: Image swapping with thumbnails, Twitter Bootstrap framework

What is the best way to connect a Jquery plugin to a table within a partial view following an ajax request?

Unable to reference a property or method in Vue.js and Vuetify due to an issue with the <v-btn-toggle> button causing an error

'this' while being utilized in a nested function

To make changes to an item, simply tap on the Catalog number

Discovering the specific element that was clicked from a collection of elements

What is the reason behind getComputedStyle having visibility set to visible?

Responsive div not displaying background image

Display error messages in Vue.js

What strategies can be used to stop elements from reverting to their original state?

Rearrange the position of one div to be placed next to another div and assign the float property

What is the best way to ensure a PrimeVue TabPanel takes up the full vertical space and allows the content within the tabs to be scroll

Is it possible to create a grid by arranging each statement with a specific format?

Ensure to use e.preventDefault() method when handling form submissions

Display and conceal different sections using hyperlinks

To continue receiving rxjs updates, kindly subscribe if the specified condition is met

Resolving redundancy in Typescript Material-UI Table codebases