在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(cainiaoplay.com)</title>
<style>div {
		color: blue;
		margin: 2px;
		font-size: 14px;
	}
	span {
		color: red;
	}
</style>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
</head>
	
<body>
<div>jQuery.isFunction( objs[ 0 ] ) = <span></span></div>
<div>jQuery.isFunction( objs[ 1 ] ) = <span></span></div>
<div>jQuery.isFunction( objs[ 2 ] ) = <span></span></div>
<div>jQuery.isFunction( objs[ 3 ] ) = <span></span></div>
<div>jQuery.isFunction( objs[ 4 ] ) = <span></span></div>
<script>
$(function () { 
	function stub() {}
	var objs = [
		function() {},
		{ x:15, y:20 },
		null,
		stub,
		"function"
	];
	$.each( objs, function( i ) {
		var isFunc = $.isFunction( objs[ i ]);
		$( "span" ).eq( i ).text( isFunc );
	});
})
</script>
 
</body>
</html>
源代码

动行结果
