"Enhance User Experience with a jQuery-powered Multiple Selection Dropdown Menu

Presently, I am in the process of customizing a multiple selection drop-down list using the features of the Multiple Selection Plugin. Here are the behaviors that I plan to implement for my customized selection:

  1. If the parent is selected, all children will be selected.
  2. If all children are selected, the parent will also be selected; if one child is deselected, then the parent will be deselected as well.
  3. When all children are selected, only the parent's name should appear in the selected field.
  4. The sub level should function like the 1st level too.

I have successfully accomplished (1), (2), and (4). However, I am still searching for a solution for (3).

Here is a sample JSON string representing the multi-selection:

var _str = '{"10":{"0":"0","1":"DISPONIBILITES","2":"t","style":"font-weight: bold;"},"16":{"0":"0","1":"TRESORERIE NETTE","2":"t","style":"font-weight: bold;"},...."}}}';

You can view the example I created at https://jsfiddle.net/skL589uu/7/.

Any insights or ideas on achieving behavior (3) would be greatly appreciated. Thanks!

Answer №1

Custom logic is not necessary for this task, as the multi-select.js library offers a feature called optGroups.

All you need to do is organize the child items under the parent group in your HTML code and everything else will be automatically handled.

For more information, you can refer to the official documentation here: Multi-select OptGroups

HTML CODE:

<select multiple="multiple">
   <optgroup label="Group 1">
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
   </optgroup>
   <optgroup label="Group 3">
      <option value="15">15</option>
   </optgroup>
</select>

JQUERY CODE:

$(function() {
    $("select").multipleSelect({
        multiple: true,
        multipleWidth: 55,
        width: '100%'
    });
});

Check out the Live Demo on JSFiddle

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