jquery's parent-Child sibling node lookup sample code

This article mainly introduced jquery's parent-child sibling node lookup method, the need for friends can refer to the

Jquery.parent (expr) for the Father node, you can filter through expr, such as $ ("span"). Parent () or $ ("span"). Parent (". Class")

Jquery.parents (expr), similar to jquery.parents (expr), but is to find all ancestor elements, not limited to the parent element

Jquery.children (expr). Returns all child nodes, this method only returns the direct child node, does not return all descendants node

Jquery.contents () returns all of the following, including nodes and text. The difference between this method and children () is that, including blank text, it is also used as a

The jquery object returns, children () returns only the node

Jquery.prev (), return to the previous sibling node, not all sibling nodes

Jquery.prevall (), return all previous sibling nodes

Jquery.next (), return to the next sibling node, not all sibling nodes

Jquery.nextall (), returning all sibling nodes after

Jquery.siblings (), Return sibling node, no points before and after

Jquery.find (expr) is completely different from jquery.filter (expr). Jquery.filter () is a subset of the initial set of jquery objects that is filtered out, while Jquery.find ()

The return result will not have the contents of the initial collection, such as $ ("P"), Find ("span"), from

element to start looking, equivalent to $ ("P span")