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rlivsey/raf-scroll-check.js

Created April 20, 2016 22:23
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raf-scroll-check.js
function watchPosition(obj, cb) {
var top = obj.scrollTop;
function checkPosition() {
requestAnimationFrame(function() {
var newTop = obj.scrollTop;
if (top !== newTop) {
cb({ oldValue: top, newValue: newTop });
top = newTop;
}
checkPosition();
});
}
checkPosition();
}
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