jQuery selector syntax
Description
The selector syntax used by jQuery is a combination of CSS1-3 and XPath selectors. With jQuery you can select elements by attributes, element type, element position, CSS class, or a combination of these. The syntax for selecting elements is as follows:
$(selector,[context])
or
jQuery(selector, [context])
To select elements by tag name, use the tag name in the selector. For example, $("div") retrieves all of the divs in a document.
Example
<!DOCTYPE html>
<html>
<head>
<script src="http://java2s.com/style/jquery-1.8.0.min.js"></script>
<script>
$(document).ready(function(){ <!--from ww w. j a va 2 s .c om-->
var wrappedElements = $("div");
document.writeln(wrappedElements.length);
});
</script>
</head>
<body>
<div id="1"></div>
<div id="2"></div>
<div id="3"></div>
</body>
</html>