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lonelydatum/getOffset

Last active March 14, 2017 17:52
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getOffset
getOffset(obj) {
var offsetLeft = 0;
var offsetTop = 0;
do {
if (!isNaN(obj.offsetLeft)) {
offsetLeft += obj.offsetLeft;
}
if (!isNaN(obj.offsetTop)) {
offsetTop += obj.offsetTop;
}
} while(obj = obj.offsetParent );
return {left: offsetLeft, top: offsetTop};
}
//source: https://mobiforge.com/design-development/html5-mobile-web-touch-events
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