javascript - Scroll Down the page event - Stack Overflow

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How can I catch the event of scroll down the page? I mean I want to have function call if the user scroll down to the end of the page?

Using Prototype JS or pure Javascript.

How can I catch the event of scroll down the page? I mean I want to have function call if the user scroll down to the end of the page?

Using Prototype JS or pure Javascript.

• javascript
• events
• prototypejs
• dom-events

Share Improve this question Follow edited Jul 20, 2019 at 18:56 Brian Tompsett - 汤莱恩 5,8937272 gold badges6161 silver badges133133 bronze badges asked May 27, 2011 at 11:57 ehsun7behsun7b 4,8661414 gold badges6363 silver badges9999 bronze badges

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2 Answers 2

Sorted by: Reset to default 4

You would need to bind a scroll event to the window and then check the scroll position.

$(window).observe('scroll', function(event) {
    var scrollOffsets = document.viewport.getScrollOffsets();
    var scrollTop = scrollOffsets.top;
});

Using prototypejs try this,

$(document).observe('scroll', function(event) {     
  alert("the page has been scrolled"); 
  //call the user function
});

or try this,

Event.observe(window,'scroll', function(event) {        alert("the page has been scrolled");    
//call the user function 
}); 

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