Untitled

<html>
<head>
<script type="text/javascript">
function cek(){
    var a=document.homo.txupdate.value;
    if(a==''){
        document.homo.gay.innerHTML='Masukkan text dulu -_-';
        return false;
    }else{
        document.homo.gay.innerHTML="";
        return true;
    }
}
</script>
</head>
<body>
<form action="#" method="post" name="homo" onSubmit="return cek()">
<textarea name="txupdate" rows="6" cols="45" placeholder="masukkan text"></textarea><br>
<input type="submit" name="btnsubmit1"><div name="gay"></div>
</form>
</body>
</html>