I am using jQuery Keyup function but its not working for me
<script type="text/javascript">
$(document).ready(function() {
jQuery.noConflict();
$("firstName").keyup(function(){
alert("first Name");
});
</script>
<apex:form id="PrimaryTab">
<div>
<label for="inputdefault">First Name</label>
<apex:inputField value="{!le.firstName}" styleClass="form-control id="firstName" required="true"/>
</div>
</apex:form>