How do I successfully query the checked property?
The checked
property of a checkbox DOM element will give you the checked
state of the element.
Given your existing code, you could therefore do this:
if(document.getElementById('isAgeSelected').checked) { $("#txtAge").show(); } else { $("#txtAge").hide(); }
However, there's a much prettier way to do this, using toggle
:
$('#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>