in _/js/bootstrap.bundle.js [3720:3741]
_getPlacement() {
const parentDropdown = this._parent;
if (parentDropdown.classList.contains(CLASS_NAME_DROPEND)) {
return PLACEMENT_RIGHT;
}
if (parentDropdown.classList.contains(CLASS_NAME_DROPSTART)) {
return PLACEMENT_LEFT;
}
if (parentDropdown.classList.contains(CLASS_NAME_DROPUP_CENTER)) {
return PLACEMENT_TOPCENTER;
}
if (parentDropdown.classList.contains(CLASS_NAME_DROPDOWN_CENTER)) {
return PLACEMENT_BOTTOMCENTER;
}
// We need to trim the value because custom properties can also include spaces
const isEnd = getComputedStyle(this._menu).getPropertyValue('--bs-position').trim() === 'end';
if (parentDropdown.classList.contains(CLASS_NAME_DROPUP)) {
return isEnd ? PLACEMENT_TOPEND : PLACEMENT_TOP;
}
return isEnd ? PLACEMENT_BOTTOMEND : PLACEMENT_BOTTOM;
}