jQuery si la casilla de verificación está marcada



1 Answers

para jQuery 1.6 o superior:

if ($('input.checkbox_check').prop('checked')) {
    //blah blah
}

la forma compatible con varios navegadores para determinar si una casilla de verificación está marcada es usar la propiedad https://api.jquery.com/prop/

Question

Tengo una función a continuación que quiero activar solo cuando se marca una casilla de verificación en el mismo tr. Dígame qué estoy haciendo mal, los métodos habituales no funcionan. Gracias

JS

$(".add_menu_item_table").live('click', function() {
      var value_td = $(this).parents('tr').find('td.td_name').text();
      if ($('input.checkbox_check').attr(':checked')); {
        var newDiv = $('<div class="div_menu_button"></div>');
        var showDiv = $('<div id="show' + "0" + numShow++ + '" class="menu_button_info hidden"></div>');
        var toggleTrigger = $('<a id="toggleshow' + "0" + numToggle++ + '" data-target="#show' + "0" + numTarget++ + '" class="toggle_trigger actions">&nbsp;</a><div style="padding:5px"></div>');
        var menuForm = $('<form id="menu_edit_form' + "0" + numForm++ + '" class="menu_creation_form"></form>');
        $('#created_buttons_list').append(
          newDiv.text(value_td)
        );
        newDiv.wrap("<li></li>");
        newDiv.append(toggleTrigger);
        newDiv.append(showDiv);
        showDiv.append(menuForm);
        menuForm.html('<label for="navigation_label">Navigation Label</label><input id="navigation_label' + "0" + numLabelone++ + '" type="text" placeholder="Navigation Label" name="navigation_label"><label for="attribute">Attribute</label><input id="attribute' + "0" + numLabeltwo++ + '" type="text" type="text" placeholder="Attribute" name="attribute"><label for="url">URL</label><input id="url' + "0" + numLabelthree++ + '" type="text" type="text" placeholder="URL" name="url"><input type="button" value="Remove" class="button_link remove_button"> <input type="reset" value="Cancel" class="button_link">');
      }
    });

    var numToggle = 0;
    var numShow = 0;
    var numTarget = 0;
    var numForm = 0;
    var numLabelone = 0;
    var numLabeltwo = 0;
    var numLabelthree = 0;

HTML

<table width="316px" border="0" cellspacing="0" cellpadding="0" id="table-data">
  <tbody>
    <tr>
      <td width="20px"><input type="checkbox" style="width:20px;" value="1" name="checkbox"></td>
      <td width="200px"><a href="/admin/feedbackmanager/sortby/2/sortdesc/0">Page Name</a></td>
      <td width="20px"><a href="/admin/feedbackmanager/sortby/3/sortdesc/0">Add</a></td>
    </tr>
    <tr>
      <td><input type="checkbox" style="width:20px;" value="1" name="checkbox" class="checkbox_check"></td>
      <td class="td_name">Timeplot</td>
      <td><input class="add_menu_item_table" name="add_menu_item" value="Add" type="button"></td>
    </tr>
    <tr>
      <td><input type="checkbox" style="width:20px;" value="1" name="checkbox" class="checkbox_check"></td>
      <td class="td_name">Operations Manuals</td>
      <td><input class="add_menu_item_table" name="add_menu_item" value="Add" type="button"></td>
    </tr>
    <tr>
      <td><input type="checkbox" style="width:20px;" value="1" name="checkbox" class="checkbox_check"></td>
      <td class="td_name">Company Structure</td>
      <td><input class="add_menu_item_table" name="add_menu_item" value="Add" type="button"></td>
    </tr>
    <tr>
      <td><input type="checkbox" style="width:20px;" value="1" name="checkbox" class="checkbox_check"></td>
      <td class="td_name">CMS Report</td>
      <td><input class="add_menu_item_table" name="add_menu_item" value="Add" type="button"></td>
    </tr>
    <tr>
      <td><input type="checkbox" style="width:20px;" value="1" name="checkbox" class="checkbox_check"></td>
      <td class="td_name">Test Document</td>
      <td><input class="add_menu_item_table" name="add_menu_item" value="Add" type="button"></td>
    </tr>
    <tr>
      <td><input type="checkbox" style="width:20px;" value="1" name="checkbox" class="checkbox_check"></td>
      <td class="td_name">Test CMS page</td>
      <td><input class="add_menu_item_table" name="add_menu_item" value="Add" type="button"></td>
    </tr>
  </tbody>
</table>



Vea la diferencia principal entre ATTR | PROP | IS a continuación:

Fuente: http://api.jquery.com/attr /

$( "input" )
  .change(function() {
    var $input = $( this );
    $( "p" ).html( ".attr( 'checked' ): <b>" + $input.attr( "checked" ) + "</b><br>" +
      ".prop( 'checked' ): <b>" + $input.prop( "checked" ) + "</b><br>" +
      ".is( ':checked' ): <b>" + $input.is( ":checked" ) + "</b>" );
  })
  .change();
p {
    margin: 20px 0 0;
  }
  b {
    color: blue;
  }
<meta charset="utf-8">
  <title>attr demo</title>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<input id="check1" type="checkbox" checked="checked">
<label for="check1">Check me</label>
<p></p>
 

 
</body>
</html>






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