jQuery: How can I trigger an event when a div comes into view?
This question already has an answer here:
I think you will have to hook into the scroll event and manually check. Here is a similar question:
Check if element is visible after scrolling
Hope that helps.
Bob
The waypoints plugin covers this and more. http://imakewebthings.com/jquery-waypoints/
Docs: http://imakewebthings.com/jquery-waypoints/#docs
eg:
$('.someSelector').waypoint(function(direction){
//do stuff
},{
//bottom-in-view will ensure event is thrown when the element's bottom crosses
//bottom of viewport.
offset: 'bottom-in-view'
});
If you only need to fire once:
$(window).scroll(function(){
// This is then function used to detect if the element is scrolled into view
function elementScrolled(elem)
{
var docViewTop = $(window).scrollTop();
var docViewBottom = docViewTop + $(window).height();
var elemTop = $(elem).offset().top;
return ((elemTop <= docViewBottom) && (elemTop >= docViewTop));
}
// This is where we use the function to detect if ".box2" is scrolled into view, and when it is add the class ".animated" to the <p> child element
if(elementScrolled('. box2')) {
// Your function here
}
});
Full answer: https://www.thewebtaylor.com/articles/how-to-detect-if-an-element-is-scrolled-into-view-using-jquery
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