Enable and disable text field if either checkbox is checked

Question

I have a form with 2 checkboxes and 2 sections of input text fields that are disabled.

If only the first checkbox is checked the following input text field should be enabled:

• Email
• Confirm Email
• Full Name

If only the second checkbox is checked the following input text fields should be enabled:

• Email
• Confirm Email
• Color
• Size
• Model

If both checkboxes are checked than all the input text fields should be enabled. The problem I have is that if both checkboxes are checked, then one is unchecked the 2 email text fields become disabled.

Here is a fiddle to what I have. I can use jQuery. http://jsfiddle.net/Ujxkq/

Here is my HTML:

<form id="myForm">
  <h3>Section 1</h3>
  Checkbox 1: <input type="checkbox" name="checkbox1" id="checkboxOne" onclick="enableDisableEmail(this.checked, 'emailAddr', 'emailConfirm');enableDisableSection1(this.checked, 'fullName');" />
  <p><input type="text" id="emailAddr" name="myEmailAddr" placeholder="Email" disabled /></p>
  <p><input type="text" id="emailConfirm" name="myEmailConfirm" placeholder="Confirm Email" disabled /></p>
  <p><input type="text" id="fullName" name="myFullName" placeholder="Full Name" disabled /></p>

  <h3>Section 2</h3>
  Checkbox 2: <input type="checkbox" name="checkbox2" id="checkboxTwo" onclick="enableDisableEmail(this.checked, 'emailAddr', 'emailConfirm');enableDisableSection2(this.checked, 'color', 'size', 'model');" />
  <p><input type="text" id="color" name="myColor" placeholder="Color" disabled /></p>
  <p><input type="text" id="size" name="mySize" placeholder="Size" disabled /></p>
  <p><input type="text" id="model" name="myModel" placeholder="Model" disabled /></p>
</form>

Here is my Javascript:

function enableDisableEmail(isEnabled, email, confirm) {
    document.getElementById(email).disabled = !isEnabled;
    document.getElementById(confirm).disabled = !isEnabled;
}

function enableDisableSection1(isEnabled, fullName) {
    document.getElementById(fullName).disabled = !isEnabled;
}

function enableDisableSection2(isEnabled, color, size, model) {
    document.getElementById(color).disabled = !isEnabled;
    document.getElementById(size).disabled = !isEnabled;
    document.getElementById(model).disabled = !isEnabled;
}

Answer 1

You tagged this question with jQuery, but you're not using it so far.
Here's a version that uses jQuery:

jQuery(function($) {
    $('#checkboxOne, #checkboxTwo').click(function() {
        var cb1 = $('#checkboxOne').is(':checked');
        var cb2 = $('#checkboxTwo').is(':checked');
        $('#emailAddr, #emailConfirm').prop('disabled', !(cb1 || cb2));
        $('#fullName').prop('disabled', !cb1);
        $('#color, #size, #model').prop('disabled', !cb2);    
    });
});

You can remove all onclick attributes on the checkboxes themselves if you're using this version.
The updated fiddle for this version is here: http://jsfiddle.net/tB7Yz/

Answer 2

I changed a little your code an used Jquery

$(document).ready(function(){
var changeStatus = function(){
    var fne = $("#checkboxOne").prop("checked");
    $("#fullName").prop("disabled", !fne);

    var csme =$("#checkboxTwo").prop("checked");
    $("#color").prop("disabled", !csme);
    $("#size").prop("disabled", !csme);
    $("#model").prop("disabled", !csme);

    var any= fne || csme;
    $("#emailAddr").prop("disabled", !any);
    $("#emailConfirm").prop("disabled", !any);
};


$("#checkboxOne").on("change", changeStatus);
$("#checkboxTwo").on("change", changeStatus);

});

Fiddle