javascript - jQuery checkbox change and click event - Stack Overflow

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$(document).ready(function() {
  //set initial state.
  $('#textbox1').val($(this).is(':checked'));

  $('#checkbox1').change(function() {
    $('#textbox1').val($(this).is(':checked'));
  });

  $('#checkbox1').click(function() {
    if (!$(this).is(':checked')) {
      return confirm("Are you sure?");
    }
  });
});

<script src=".3.1/jquery.min.js"></script>
<input type="checkbox" id="checkbox1"/><br />
<input type="text" id="textbox1"/>

$(document).ready(function() {
  //set initial state.
  $('#textbox1').val($(this).is(':checked'));

  $('#checkbox1').change(function() {
    $('#textbox1').val($(this).is(':checked'));
  });

  $('#checkbox1').click(function() {
    if (!$(this).is(':checked')) {
      return confirm("Are you sure?");
    }
  });
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="checkbox" id="checkbox1"/><br />
<input type="text" id="textbox1"/>

Here .change() updates the textbox value with the checkbox status. I use .click() to confirm the action on uncheck. If the user selects cancel, the checkmark is restored but .change() fires before confirmation.

This leaves things in an inconsistent state and the textbox says false when the checkbox is checked.

How can I deal with the cancellation and keep textbox value consistent with the check state?

• javascript
• jquery
• checkbox
• event-handling

Share Improve this question Follow edited Jun 22, 2020 at 8:18 Kamil Kiełczewski 92.1k3434 gold badges394394 silver badges370370 bronze badges asked Aug 11, 2011 at 18:50 Professor ChaosProfessor Chaos 9,06099 gold badges4141 silver badges5555 bronze badges 2

• 1 It works in FF and chrome and has the explained behavior in IE 8. So it may be important to note which browsers you need this to work in and which ones you're seeing the error. – kasdega Commented Aug 11, 2011 at 18:56
• It's not the best, but I believe it's working for me here: http://jsfiddle.net/Skooljester/2Xxcn/. – ayyp Commented Aug 11, 2011 at 19:00

Add a comment  | 

21 Answers 21

Sorted by: Reset to default 1121

Tested in JSFiddle and does what you're asking for.This approach has the added benefit of firing when a label associated with a checkbox is clicked.

Updated Answer:

$(document).ready(function() {
    //set initial state.
    $('#textbox1').val(this.checked);

    $('#checkbox1').change(function() {
        if(this.checked) {
            var returnVal = confirm("Are you sure?");
            $(this).prop("checked", returnVal);
        }
        $('#textbox1').val(this.checked);        
    });
});

Original Answer:

$(document).ready(function() {
    //set initial state.
    $('#textbox1').val($(this).is(':checked'));

    $('#checkbox1').change(function() {
        if($(this).is(":checked")) {
            var returnVal = confirm("Are you sure?");
            $(this).attr("checked", returnVal);
        }
        $('#textbox1').val($(this).is(':checked'));        
    });
});

Demo

Use mousedown

$('#checkbox1').mousedown(function() {
    if (!$(this).is(':checked')) {
        this.checked = confirm("Are you sure?");
        $(this).trigger("change");
    }
});

Most of the answers won't catch it (presumably) if you use <label for="cbId">cb name</label>. This means when you click the label it will check the box instead of directly clicking on the checkbox. (Not exactly the question, but various search results tend to come here)

<div id="OuterDivOrBody">
    <input type="checkbox" id="checkbox1" />
    <label for="checkbox1">Checkbox label</label>
    <br />
    <br />
    The confirm result:
    <input type="text" id="textbox1" />
</div>

In which case you could use:

Earlier versions of jQuery:

$('#OuterDivOrBody').delegate('#checkbox1', 'change', function () {
    // From the other examples
    if (!this.checked) {
        var sure = confirm("Are you sure?");
        this.checked = !sure;
        $('#textbox1').val(sure.toString());
    }
});

JSFiddle example with jQuery 1.6.4

jQuery 1.7+

$('#checkbox1').on('change', function() { 
    // From the other examples
    if (!this.checked) {
        var sure = confirm("Are you sure?");
        this.checked = !sure;
        $('#textbox1').val(sure.toString());
    }
});

JSFiddle example with the latest jQuery 2.x

• Added jsfiddle examples and the html with the clickable checkbox label

Well .. just for the sake of saving a headache (its past midnight here), I could come up with:

$('#checkbox1').click(function() {
  if (!$(this).is(':checked')) {
    var ans = confirm("Are you sure?");
     $('#textbox1').val(ans);
  }
});

Hope it helps

Late answer, but you can also use on("change"), i.e.:

$('#check').on('change', function() {
     var checked = this.checked
    $('span').html(checked.toString())
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="checkbox" id="check"> <span>Check me!</span>

Here you are

Html

<input id="ProductId_a183060c-1030-4037-ae57-0015be92da0e" type="checkbox" value="true">

JavaScript

<script>
    $(document).ready(function () {

      $('input[id^="ProductId_"]').click(function () {

        if ($(this).prop('checked')) {
           // do what you need here     
           alert("Checked");
        }
        else {
           // do what you need here         
           alert("Unchecked");
        }
      });

  });
</script>

For me this works great:

$('#checkboxID').click(function () {
    if ($(this).attr('checked')) {
        alert('is checked');
    } else {
        alert('is not checked');
    }
})

simply just use the click event my check box id is CheckAll

     $('#CheckAll').click(function () {

        if ($('#CheckAll').is(':checked') == true) {

             alert(";)");
      }
    });

Get rid of the change event, and instead change the value of the textbox in the click event. Rather than returning the result of the confirm, catch it in a var. If its true, change the value. Then return the var.

Checkbox click and checking for the value in the same event loop is the problem.

Try this:

$('#checkbox1').click(function() {
    var self = this;
    setTimeout(function() {

        if (!self.checked) {
            var ans = confirm("Are you sure?");
            self.checked = ans;
            $('#textbox1').val(ans.toString());
        }
    }, 0);
});

Demo: http://jsfiddle.net/mrchief/JsUWv/6/

if you are using the iCheck Jquery use the below code

 $("#CheckBoxId").on('ifChanged', function () {
                alert($(this).val());
            });

Try this

$('#checkbox1').click(function() {
        if (!this.checked) {
            var sure = confirm("Are you sure?");
            this.checked = sure;
            $('#textbox1').val(sure.toString());
        }
    });

$(document).ready(function() {
    //set initial state.
    $('#textbox1').val($(this).is(':checked'));

    $('#checkbox1').change(function() {
        $('#textbox1').val($(this).is(':checked'));
    });

    $('#checkbox1').click(function() {
        if (!$(this).is(':checked')) {
            if(!confirm("Are you sure?"))
            {
                $("#checkbox1").prop("checked", true);
                $('#textbox1').val($(this).is(':checked'));
            }
        }
    });
});

// this works on all browsers.

$(document).ready(function() {
    //set initial state.
    $('#textbox1').val($(this).is(':checked'));

    $('#checkbox1').change(function(e) {
        this.checked =  $(this).is(":checked") && !!confirm("Are you sure?");
        $('#textbox1').val(this.checked);
        return true;
    });
});

$('#checkbox1').click(function() {
    if($(this).is(":checked")) {
        var returnVal = confirm("Are you sure?");
        $(this).attr("checked", returnVal);
    }
    $('#textbox1').val($(this).is(':checked')); 
});


<div id="check">
    <input type="checkbox" id="checkbox1" />
    <input type="text" id="textbox1" />
</div>

I am not sure why everyone is making this so complicated. This is all I did.

if(!$(this).is(":checked")){ console.log("on"); }

$('#checkboxId').change(() => {
    if($('#checkboxId').is(':checked')) {
        $('#checkboxStatus').text('Active')
    } else {
        $('#checkboxStatus').text('Inactive')
    }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.2.3/jquery.min.js"></script>

<label><input type="checkbox" id="checkboxId">Click on me!</lable>
<div id="checkboxStatus">Off</div>

get radio value by name

 $('input').on('className', function(event){
        console.log($(this).attr('name'));
        if($(this).attr('name') == "worker")
            {
                resetAll();                 
            }
    });

Try

checkbox1.onclick= e => {
  if(!checkbox1.checked) checkbox1.checked = !confirm("Are you sure?");
  textbox1.value = checkbox1.checked;
}

<input type="checkbox" id="checkbox1" /><br />
<input type="text" id="textbox1" value='false'/>

Try this:

    let checkbox = document.getElementById('checkboxId');
    if (checkbox.checked != true)
    {
        alert("select checkbox");
    }

 $("#person_IsCurrentAddressSame").change(function ()
    {
        debugger
        if ($("#person_IsCurrentAddressSame").checked) {
            debugger

        }
        else {

        }

    })

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