DOM Traversal Methods - MarkMail

Chapter 2
As always, remember that development time is typically the most valuable resource.
Do not focus on optimization of selector speed unless it is clear that performance
needs to be improved.
As a CSS selector, the multiple-class syntax of example 3 is supported by all modern
web browsers, but not by Internet Explorer versions 6 and below, which makes the
syntax especially handy for applying styles cross-browser through jQuery.
Descendant: E F
All elements matched by F that are descendants of an element matched by E.
Examples
1. $('#container p'): selects all elements matched by that are
descendants of an element that has an id of container
2. $('a img'): selects all elements matched by that are descendants of an
element matched by
Description
A descendant of an element could be a child, grandchild, great-grandchild,
and so on, of that element. For example, in the following HTML, the
element is a descendant of the , , , and
elements:
Child: E > F
All elements matched by F that are children of an element matched by E.
Examples
1. $('li > ul'): selects all elements matched by that are children of an
element matched by
2. $('p > code'): selects all elements matched by that are children of an
element matched by
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