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javascript - Cannot uncheck checkbox - Stack Overflow

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I am trying to uncheck a checkbox once my form is submitted

on the html side I have the following

<form class="form contact-form" id="contact_form">
  <input type="checkbox" id="store_pickup" name="pickup" value="pickup" onclick="storeDetails()">
  <label for="store_pickup">Store Pickup</label>
  ....

And then I have an existing JS file for the form which work for all other input types but Checkbox

$(document).ready(function(){
$("#submit_btn").click(function(){

  //get input field values
    var user_name = $('input[name=name]').val();
    var user_email = $('input[name=email]').val();
    var user_message = $('textarea[name=message]').val();

    //simple validation at client's end
    //we simply change border color to red if empty field using .css()
    var proceed = true;
    if (user_name == "") {
        $('input[name=name]').css('border-color', '#e41919');
        proceed = false;
    }
    if (user_email == "") {
        $('input[name=email]').css('border-color', '#e41919');
        proceed = false;
    }

    if (user_message == "") {
        $('textarea[name=message]').css('border-color', '#e41919');
        proceed = false;
    }

    //everything looks good! proceed...
    if (proceed) {
        //data to be sent to server
        post_data = {
            'userName': user_name,
            'userEmail': user_email,
            'userMessage': user_message
        };

        //Ajax post data to server
        $.post('contact_business.php', post_data, function(response){

            //load json data from server and output message
            if (response.type == 'error') {
                output = '<div class="error">' + response.text + '</div>';
            }
            else {

                output = '<div class="success">' + response.text + '</div>';

                //reset values in all input fields
                $('#contact_form input').val('');
                $('#contact_form textarea').val('');
                // $('#store_pickup').attr('checked', false);
                // $("#store_pickup").prop('checked', false);


            }

            $("#result").hide().html(output).slideDown();
        }, 'json');

    }

    return false;
});

//reset previously set border colors and hide all message on .keyup()
$("#contact_form input, #contact_form textarea").keyup(function(){
    $("#contact_form input, #contact_form textarea").css('border-color', '');
      // $("#store_pickup").attr('checked', false);
      // $("#store_pickup").prop('checked', false);
    $("#result").slideUp();
  });
});

I've tried the two following statment mented out in the code but these do not work, can anyone assist me. Thank you!

I am trying to uncheck a checkbox once my form is submitted

on the html side I have the following

<form class="form contact-form" id="contact_form">
  <input type="checkbox" id="store_pickup" name="pickup" value="pickup" onclick="storeDetails()">
  <label for="store_pickup">Store Pickup</label>
  ....

And then I have an existing JS file for the form which work for all other input types but Checkbox

$(document).ready(function(){
$("#submit_btn").click(function(){

  //get input field values
    var user_name = $('input[name=name]').val();
    var user_email = $('input[name=email]').val();
    var user_message = $('textarea[name=message]').val();

    //simple validation at client's end
    //we simply change border color to red if empty field using .css()
    var proceed = true;
    if (user_name == "") {
        $('input[name=name]').css('border-color', '#e41919');
        proceed = false;
    }
    if (user_email == "") {
        $('input[name=email]').css('border-color', '#e41919');
        proceed = false;
    }

    if (user_message == "") {
        $('textarea[name=message]').css('border-color', '#e41919');
        proceed = false;
    }

    //everything looks good! proceed...
    if (proceed) {
        //data to be sent to server
        post_data = {
            'userName': user_name,
            'userEmail': user_email,
            'userMessage': user_message
        };

        //Ajax post data to server
        $.post('contact_business.php', post_data, function(response){

            //load json data from server and output message
            if (response.type == 'error') {
                output = '<div class="error">' + response.text + '</div>';
            }
            else {

                output = '<div class="success">' + response.text + '</div>';

                //reset values in all input fields
                $('#contact_form input').val('');
                $('#contact_form textarea').val('');
                // $('#store_pickup').attr('checked', false);
                // $("#store_pickup").prop('checked', false);


            }

            $("#result").hide().html(output).slideDown();
        }, 'json');

    }

    return false;
});

//reset previously set border colors and hide all message on .keyup()
$("#contact_form input, #contact_form textarea").keyup(function(){
    $("#contact_form input, #contact_form textarea").css('border-color', '');
      // $("#store_pickup").attr('checked', false);
      // $("#store_pickup").prop('checked', false);
    $("#result").slideUp();
  });
});

I've tried the two following statment mented out in the code but these do not work, can anyone assist me. Thank you!

Share Improve this question edited Jun 9, 2018 at 11:53 Ivan 40.9k8 gold badges73 silver badges117 bronze badges asked Jun 9, 2018 at 11:48 Noob PrgmrNoob Prgmr 431 silver badge8 bronze badges 1
  • Please provide a minimal verifiable example of your problem. You have given us the plete JavaScript code but only a portion of your form. Either provide the rest of the HTML or write a new JavaScript that will only look at the checkbox. – Ivan Commented Jun 9, 2018 at 11:52
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2 Answers 2

Reset to default 4

You can toggle the checked attr of a HTML input of type="checkbox" with

$( elem ).prop('checked', false); 
$( elem ).prop('checked', true); 

You can check the current state of the checked property of the checkbox with

$( elem ).prop('checked')

You can also use Chrome Inspect tool to view/test the current properties of a DOM element by selecting the element and then viewing the 'properties' tab. https://developers.google./web/tools/chrome-devtools/inspect-styles/edit-dom

Note: In my version of Chrome I have to deselect and then re-select the DOM element to see the properties refresh after modifying a property value with the above JS.

It's the presence of absence of a checked attribute that controls whether the checkbox is checked. Setting the value of the attribute has no effect.

So you need

$("#store_pickup").removeAttr('checked');
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