check not contains in div html

Question

I have a div <div id="maindiv"></div> and some checkboxes to add some html element inside that maindiv.

When i check that checkbox, i need to append <div id="subdiv"></div> after checking that it doesn't contains that element. The subdiv id will vary according to the checkbox selected.

When i uncheck the checkbox, i need to remove the <div id="subdiv"></div> if exists.

How can i do it using jquery?

Answer 1

Try this:

    $(function() {
        var chk = "<input id=\"sex\" name=\"sex\" type=\"checkbox\">";
        var sub = "<div id=\"subdiv\">hello</div>";
        $("#container").prepend(chk);

        $("#sex").click(function(event) {
            if ($("#maindiv").data('sex')) {
                $("#maindiv").data('sex', false);

                $("#subdiv").remove();
            } else {
                $("#maindiv").data('sex', true);
                $("#maindiv").append(sub);
            }
        });             
    });

HTML:

<div id="container">
    <div id="maindiv">main</div>
</div>

I used data to do the checking.

Answer 2

Why don't you add <div id="subdiv"></div> in your HTML and just hide/show this div when you need it?

Answer 3

function myToggle() {
  if($("#mycheck:checked").val()!=null) {
    //check is true
    $("#maindiv").append("<div id='subdiv'></div>");
  }
  else {
    //check is false
    $("#subdiv").remove();
  }
}

Answer 4

$('#my-checkbox').change(function() {
  if ($(this).is(':checked')) {
    if (!$('#subdiv').length) {
      $('#maindiv').append('<div id="subdiv">...</div>');
    }
  } else {
    $('#subdiv').remove();
  }
});