Close Modal after Submit button / Count all the values of checked checkbox

Question

I am new in php, html5 and css. Hope you can help me with my problem.
I style it using css. Here are my codes:

<form method="post" name="testform" action="">

<a href="#modal"> <!-- when the input textbox was clicked, modal will pop up -->
    <input disabled type="text" name="test" placeholder="test" value="">
</a>

    <div class="modalwrapper" id="modal">   <!-- modal -->
            <div class="modalcontainer">    
                <div class="modalcol1">
                    <label>Test 1</label>
                    <input type="checkbox" name="test_modal[]" value="1">
                    <div class="clear"></div>
                    <label>Test 2</label>
                    <input type="checkbox" name="test_modal[]" value="2">
                    <div class="clear"></div>
                    <label>Test 3</label>
                    <input type="checkbox" name="test_modal[]" value="3">
                    <div class="clear"></div>
                    <label>Test 4</label>
                    <input type="checkbox" name="test_modal[]" value="4">
                    <div class="clear"></div>
                    <label>Test 5</label>
                    <input type="checkbox" name="test_modal[]" value="5">
                    <div class="clear"></div>

                    <div class="savebutton">
                        <input class="btn1" type="submit" value="Submit"/>
                    </div>
                </div>
            </div>
        <div class="overlay"></div>
    </div>      
</form>

Here is my css code for it.

/* modal layout */
    .modalwrapper {
        top: 0;
        left: 0;
        opacity: 0;
        position: absolute;
        visibility: hidden;
        box-shadow: 0 3px 7px rgba(0,0,0,.25);
        box-sizing: border-box;
        transition: all .4s ease-in-out;
        -webkit-transition: all .4s ease-in-out;
        -moz-transition: all .4s ease-in-out;
    }

    .modalwrapper:target {
        opacity: 1;
        visibility: visible
    }

    .overlay {
        background-color: #000;
        background: rgba(0,0,0,.8);
        height: 100%;
        left: 0;
        position: fixed;
        top: 0;
        width: 100%;
        z-index: 1;
    }

    .modalcontainer {
        display: table;
        background-color: #777;
        position: relative;
        z-index: 100;
        color: #fff;
        padding: 5px;
    }

    .modalcol1 { display: table-cell; }

    .clear { clear: both; }

    .modalwrapper input[type=checkbox] {
        float: right;
        margin-right: 20px;
    }

    .savebutton input[type=submit] {
        float: right;
        background-color: maroon;
        color: #fff;
        border: none;
        padding: 5px 10px;
        margin-top: 5px;
        margin-right: 20px;
    }
    /* modal layout ends here */

1. My problem is that when i clicked submit, it doesn't close the modal. I try redirecting it on the parent window but nothing happens, it doesn't close.

2. I also have another question concerning how to count how many checkbox were checked using PHP. If 1 checkbox was checked, it will display the value of it and if more than 2 were checked it will echo a value "MORE"

Hope anyone can help me please. If my information are not enough, please let me know so i can update it. I want to learn more. Thanks in advance.

Answer 1

To open and close your modal you have to use JS. I recommend you to use the jQuery library (Check out this article to learn how to use jQuery in your JS). With that, you can simply close the modal with .fadeOut() :

$("#idofyourbutton").click(function(){ $("#idofyourmodal").fadeOut(); });

To count all your checked checkboxes, you can use ie this:

var l = $("input[type='checkbox']:checked").length;

After that, you can use if else to set the content of your input-field.

Answer 2

Make sure you actually follow the proper html format of Bootstrap modals. Pay attention to data and role attributes. Note how buttons that close modal have those attributes.

<div class="modal fade" tabindex="-1" role="dialog">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title">Modal title</h4>
      </div>
      <div class="modal-body">
        <p>One fine body&hellip;</p>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div><!-- /.modal-content -->
  </div><!-- /.modal-dialog -->
</div><!-- /.modal -->

https://getbootstrap.com/javascript/#modals