function manipulationTarget( elem, content ) { if ( jQuery.nodeName( elem, "table" ) && jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { return elem.getElementsByTagName( "tbody" )[ 0 ] || elem; } return elem; }
position: () => { if ( !this[ 0 ] ) { return; } let offsetParent, offset, elem = this[ 0 ], parentOffset = { top: 0, left: 0 }; // Fixed elements are offset from window (parentOffset = {top:0, left: 0}, // because it is its only offset parent if ( jQuery.css( elem, "position" ) === "fixed" ) { // Assume getBoundingClientRect is there when computed position is fixed offset = elem.getBoundingClientRect(); } else { // Get *real* offsetParent offsetParent = this.offsetParent(); // Get correct offsets offset = this.offset(); if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) { parentOffset = offsetParent.offset(); } // Add offsetParent borders // Subtract offsetParent scroll positions parentOffset.top += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ) - offsetParent.scrollTop(); parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true ) - offsetParent.scrollLeft(); } // Subtract parent offsets and element margins return { top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ), left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true ) }; },