30 lines
876 B
JavaScript
30 lines
876 B
JavaScript
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import contains from './contains';
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import ownerDocument from './ownerDocument';
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import scrollLeft from './scrollLeft';
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import scrollTop from './scrollTop';
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/**
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* Returns the offset of a given element, including top and left positions, width and height.
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*
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* @param node the element
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*/
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export default function offset(node) {
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var doc = ownerDocument(node);
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var box = {
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top: 0,
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left: 0,
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height: 0,
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width: 0
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};
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var docElem = doc && doc.documentElement; // Make sure it's not a disconnected DOM node
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if (!docElem || !contains(docElem, node)) return box;
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if (node.getBoundingClientRect !== undefined) box = node.getBoundingClientRect();
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box = {
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top: box.top + scrollTop(docElem) - (docElem.clientTop || 0),
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left: box.left + scrollLeft(docElem) - (docElem.clientLeft || 0),
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width: box.width,
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height: box.height
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};
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return box;
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}
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