jQuery addClass example
Change class name on click in jQuery
HTML
<input type="time" name="hrentrada_get"style="width:70px" maxlength="4">
<input type="time" name="hrsaida_get" style="width:70px" maxlength="4">
<form name="teste" method="GET" action="index.html" onsubmit="return ajustarHora()">
<input type="hidden" name="hrentrada">
<input type="hidden" name="hrsaida">
<input type="submit" name="submit">
</form>
<script>
function ajustarHora(){
$("input[name='hrentrada']").val($("input[name='hrentrada_get']").val().replace(":",""));
$("input[name='hrsaida']").val($("input[name='hrsaida_get']").val().replace(":",""));
return false;
}
</script>