Best way to scrolldown onpageload

javascript php jquery asp.net jquery-events

PHP Snippet 1:

    $(document).ready(function() {
        window.scrollTo(0, 100);
    }

PHP Snippet 2:

function Scrolldown() {
 window.scroll(0,100); 
}

window.onload = Scrolldown;

PHP Snippet 3:

<body onLoad="Scrolldown()">

PHP Snippet 4:

function Scrolldown(){
window.scroll(0,100); 
}