html select only one checkbox in a group

Solution 1:

This snippet will:

Allow grouping like Radio buttons
Act like Radio
Allow unselecting all

// the selector will match all input controls of type :checkbox
// and attach a click event handler 
$("input:checkbox").on('click', function() {
  // in the handler, 'this' refers to the box clicked on
  var $box = $(this);
  if ($box.is(":checked")) {
    // the name of the box is retrieved using the .attr() method
    // as it is assumed and expected to be immutable
    var group = "input:checkbox[name='" + $box.attr("name") + "']";
    // the checked state of the group/box on the other hand will change
    // and the current value is retrieved using .prop() method
    $(group).prop("checked", false);
    $box.prop("checked", true);
  } else {
    $box.prop("checked", false);
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>


<div>
  <h3>Fruits</h3>
  <label>
    <input type="checkbox" class="radio" value="1" name="fooby[1][]" />Kiwi</label>
  <label>
    <input type="checkbox" class="radio" value="1" name="fooby[1][]" />Jackfruit</label>
  <label>
    <input type="checkbox" class="radio" value="1" name="fooby[1][]" />Mango</label>
</div>
<div>
  <h3>Animals</h3>
  <label>
    <input type="checkbox" class="radio" value="1" name="fooby[2][]" />Tiger</label>
  <label>
    <input type="checkbox" class="radio" value="1" name="fooby[2][]" />Sloth</label>
  <label>
    <input type="checkbox" class="radio" value="1" name="fooby[2][]" />Cheetah</label>
</div>

Solution 2:

You'd want to bind a change() handler so that the event will fire when the state of a checkbox changes. Then, just deselect all checkboxes apart from the one which triggered the handler:

$('input[type="checkbox"]').on('change', function() {
   $('input[type="checkbox"]').not(this).prop('checked', false);
});

Here's a fiddle

As for grouping, if your checkbox "groups" were all siblings:

<div>
    <input type="checkbox" />
    <input type="checkbox" />
    <input type="checkbox" />
</div>  
<div>
    <input type="checkbox" />
    <input type="checkbox" />
    <input type="checkbox" />
</div>   
<div>
    <input type="checkbox" />
    <input type="checkbox" />
    <input type="checkbox" />
</div>

You could do this:

$('input[type="checkbox"]').on('change', function() {
   $(this).siblings('input[type="checkbox"]').prop('checked', false);
});

Here's another fiddle

If your checkboxes are grouped by another attribute, such as name:

<input type="checkbox" name="group1[]" />
<input type="checkbox" name="group1[]" />
<input type="checkbox" name="group1[]" />

<input type="checkbox" name="group2[]" />
<input type="checkbox" name="group2[]" />
<input type="checkbox" name="group2[]" />

<input type="checkbox" name="group3[]" />
<input type="checkbox" name="group3[]" />
<input type="checkbox" name="group3[]" />

You could do this:

$('input[type="checkbox"]').on('change', function() {
    $('input[name="' + this.name + '"]').not(this).prop('checked', false);
});

Here's another fiddle

Solution 3:

There are already a few answers to this based on pure JS but none of them are quite as concise as I would like them to be.

Here is my solution based on using name tags (as with radio buttons) and a few lines of javascript.

function onlyOne(checkbox) {
    var checkboxes = document.getElementsByName('check')
    checkboxes.forEach((item) => {
        if (item !== checkbox) item.checked = false
    })
}

<input type="checkbox" name="check" onclick="onlyOne(this)">
<input type="checkbox" name="check" onclick="onlyOne(this)">
<input type="checkbox" name="check" onclick="onlyOne(this)">
<input type="checkbox" name="check" onclick="onlyOne(this)">

html select only one checkbox in a group

Solution 1:

Solution 2:

Here's a fiddle

Here's another fiddle

Here's another fiddle

Solution 3:

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