.size()
.size() Returns: Number
Description: Return the number of elements in the jQuery object.
-
version added: 1.0.size()
The .size() method is functionally equivalent to the .length property; however, the .length property is preferred because it does not have the overhead of a function call.
Given a simple unordered list on the page:
<ul> <li>foo</li> <li>bar</li> </ul>
Both .size() and .length identify the number of items:
alert( "Size: " + $("li").size() );
alert( "Size: " + $("li").length );
This results in two alerts:
Size: 2
Size: 2
Example:
Count the divs. Click to add more.
<!DOCTYPE html>
<html>
<head>
<style>
body { cursor:pointer; min-height: 100px; }
div { width:50px; height:30px; margin:5px;
float:left; background:blue; }
span { color:red; }
</style>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<span></span>
<div></div>
<script>
$(document.body)
.click(function() {
$(this).append( $("<div>") );
var n = $("div").size();
$("span").text("There are " + n + " divs. Click to add more.");
})
// trigger the click to start
.click();
</script>
</body>
</html>