checkboxes selected jquery code example

Example 1: get value of selected checkbox jquery

$('#checkbox_id:checked').val();
//if checkbox is selected than gets its value

Example 2: jquery checkbox checked

$("checkbox").is(":checked")

Example 3: jquery get selected checkboxes

var selected = [];
$('#checkboxes input:checked').each(function() {
    selected.push($(this).attr('name'));
});

Example 4: how do i check if JQuery checkbox is checked

$('#isAgeSelected').click(function() {
    $("#txtAge").toggle(this.checked);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js">
  </script>
<input type="checkbox" id="isAgeSelected"/>
<div id="txtAge" style="display:none">Age is something</div>