in Code/dotnetLexChatBot/wwwroot/lib/bootstrap/js/tooltip.js [356:375]
Tooltip.prototype.getPosition = function ($element) {
$element = $element || this.$element
var el = $element[0]
var isBody = el.tagName == 'BODY'
var elRect = el.getBoundingClientRect()
if (elRect.width == null) {
// width and height are missing in IE8, so compute them manually; see https://github.com/twbs/bootstrap/issues/14093
elRect = $.extend({}, elRect, { width: elRect.right - elRect.left, height: elRect.bottom - elRect.top })
}
var isSvg = window.SVGElement && el instanceof window.SVGElement
// Avoid using $.offset() on SVGs since it gives incorrect results in jQuery 3.
// See https://github.com/twbs/bootstrap/issues/20280
var elOffset = isBody ? { top: 0, left: 0 } : (isSvg ? null : $element.offset())
var scroll = { scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop() }
var outerDims = isBody ? { width: $(window).width(), height: $(window).height() } : null
return $.extend({}, elRect, scroll, outerDims, elOffset)
}