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VincentHelwig/gist:aba7b628b1205599dba7

Created November 5, 2014 11:46
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Optimised retrieve offset in vanilla js
Raw
gistfile1.js
// FROM http://jsperf.com/test-offset-jquery-vs-vanilla
function offset(elt) {
var rect = elt.getBoundingClientRect(), bodyElt = document.body;
return {
top: rect.top + bodyElt .scrollTop,
left: rect.left + bodyElt .scrollLeft
}
}
var offsetElt = offset(document.getElementById('element'));
offsetElt.top;
offsetElt.left;
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