is required

by Bruno G.

HTML

<input type="text" id="txtOne" value="#txtOne required" required> <span id="spnOne"></span><br>
<input type="text" id="txtTwo" value="#txtTwo not required"> <span id="spnTwo"></span><br>
<span style="border:1px solid blue">Missing element #txtThree</span> <span id="spnThree"></span><br>

JavaScript

$('#spnOne').html($('#txtOne').is(':required') ? 'Yes' : 'No');
$('#spnTwo').html($('#txtTwo').is(':required') ? 'Yes' : 'No');
try {
	$('#spnThree').html($('#txtThree').is(':required') ? 'Yes' : 'No');
} catch (e) {
	$('#spnThree').html('error');
}