<!DOCTYPE html>
<html>
<head>
<title>Listen to File Update</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<style>
body{
height:1000px;
}
#as{
margin-top:1200px;
font-size:100px;
color:red;
}
a{
padding-left:20%;
}
</style>
</head>
<body>
<a href="#as">Sprung was es gibt</a>
<a href="#aa">Sprung was es nicht gibt</a>
<div id="as">Gesprungen</div>
<script>
$('a').click(function(){
marke=$(this).attr('href');
marke=marke.split('#')[1];
if(document.getElementById(marke)){
//alert('Sprung marke exestiert')
}else{
alert('sprung marke gibt esnicht');
}
})
</script>
</body>
</head>