取消选中“全部选中”复选框后，提交按钮不会隐藏

Question

I am trying to make a page where submit button show/hides when a checkbox is checked. The same I want to do with the 'check-all' and currently when check-all is checked, the submit button appears but when the 'check-all' gets unchecked the submit button does not hides. Although the listed checkboxes perforn absolutely fine but only the unchecking of 'check-all' does not makes the submit button hide.

here is my code, please let me know where I am going wrong and if there is any solution for it.

<input type="checkbox" id="select_all" name="all_check[]" class="checkbox" value= "<?php echo $row['id']; ?>"/> </th>  //this is my 'check-all'

<input type="checkbox" name="check[]" <?php echo $disabled ;?> value= "<?php echo $row['id']; ?>"class="checkbox" id="select_all" >  //this is my listed checkboxes under the 'check-all'

and here is my jquery,

$(function(){
    $('[type=checkbox]').click(function ()
    {
        var checkedChbx = $('[type=checkbox]:checked');
        if (checkedChbx.length > 0)
        {
            $('#one').show();
        }
        else
        {
            $('#one').hide();
        }
    });
});


  $(document).ready(function() {

        var $submit = $("#one").hide(),
            $cbs = $('input[name="all_check[]"]').click(function() {
                $submit.toggle( $cbs.is(":checked") );
            });

    });

Answer 1

You didn't store the selector in the $submit variable, try:

var $submit = $("#one");
        $submit.hide();
           var $cbs = $('input[name="all_check[]"]').click(function() {
                $submit.toggle( $(this).is(":checked") );//use this to get the current clicked element 
            });

change the selector for the first click event to

 $('input[name="check[]"]').click(function () {....

demo:

$(function() {
  $('input[name="check[]"]').click(function() {
    var checkedChbx = $('[type=checkbox]:checked');
    if (checkedChbx.length > 0) {
      $('#one').show();
    } else {
      $('#one').hide();
    }
  });
});


$(document).ready(function() {

  var $submit = $("#one");
  $submit.hide();
  var $cbs = $('input[name="all_check[]"]').click(function() {
  $('input[name="check[]"]').prop('checked',$(this).is(":checked"));
    $submit.toggle($(this).is(":checked")); //use this to get the current clicked element 
  });

});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="checkbox" id="select_all" name="all_check[]" class="checkbox" value="<?php echo $row['id']; ?>" /> </th> //this is my 'check-all'

<input type="checkbox" name="check[]" class="checkbox" id="select_all">
<input type="checkbox" name="check[]" class="checkbox" id="select_all">
<input type="checkbox" name="check[]" class="checkbox" id="select_all">
<input type="checkbox" name="check[]" class="checkbox" id="select_all">
<input type="checkbox" name="check[]" class="checkbox" id="select_all"> //this is my listed checkboxes under the 'check-all'
<button id="one">one</button>

</div>