Core/API/jQuery - Sample Code
size()
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="/jquery/js/jquery.js"></script>
<script>
window.onload = (function(){try{
$(document.body).click(function () {
$(document.body).append($("<div>"));
var n = $("div").size();
$("span").text("There are " + n + " divs." +
"Click to add more.");
}).click(); // trigger the click to start
}catch(e){}});</script>
<style>
body { cursor:pointer; }
div { width:50px; height:30px; margin:5px; float:left;
background:blue; }
span { color:red; }
</style>
<style>html,body{border:0; margin:0; padding:0;}</style></head>
<body>
<span></span>
<div></div>
</body>
</html>
[実行結果]