Parent, child, and sibling node lookup methods

Jquery.parent (expr)//Find parent Element
Jquery.parents (expr)//Find all ancestor elements, not limited to parent elements
Jquery.children (expr)//Find all child elements, will only find the immediate child node, will not return all descendants
Jquery.contents ()//Find all of the following, including nodes and text.
Jquery.prev ()//Find previous sibling node, not all sibling nodes
Jquery.prevall ()//Find all previous sibling nodes
Jquery.next ()//Find the next sibling node, not all sibling nodes
Jquery.nextall ()//Find all subsequent sibling nodes
Jquery.siblings ()//Find sibling nodes, no points
Jquery.find (expr)//is completely different from jquery.filter (expr), jquery.filter (expr) is from the initial

Parent, child, and sibling node lookup methods