Tryit Editor v1.8

Source Code:

<!DOCTYPE html>
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js">
</script>
<script>
$(document).ready(function(){
  $("button").click(function(){
    $("div").scrollLeft(100);
  });
});
</script>
</head>
<body>

<div style="border:1px solid black;width:100px;height:130px;overflow:auto">
The longest word in the english dictionary is: pneumonoultramicroscopicsilicovolcanoconiosis.
</div><br>

<button>Set horizontal scrollbar position to 100px</button>

</body>
</html>

Result:

W3Schools.com - Try it yourself

Edit the code above and click "Submit Code" to see the result.