![Bloquear F5 com Javascript](https://webmasterbr.com/wp-content/uploads/2022/09/bloquear_f5.png)
<script language=”JavaScript”>
function Verificar()
{
var tecla=window.event.keyCode;
if (tecla==116) {console.log(“se você precionar F5 as mensagens vão sumir!”); event.keyCode=0;
event.returnValue=false;}
}
</script>
</head>
<body onKeyDown=”javascript:Verificar()”>