【JS】- 获取元素在浏览器中的位置

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// 获取元素坐标 - left getElementPageLeft(element) {   var actualLeft = element.offsetLeft;   var parent = element.offsetParent;   while (parent != null) {     actualLeft += parent.offsetLeft + parent.clientLeft;     parent = parent.offsetParent;   }   return actualLeft; }, // 获取元素坐标 - top getElementPageTop(element) {   var actualTop = element.offsetTop;   var parent = element.offsetParent;   while (parent != null) {     actualTop += parent.offsetTop + parent.clientTop;     parent = parent.offsetParent;   }   return actualTop; }