jeresig/isObjectLiteral.html

## isObjectLiteral.html
<!DOCTYPE html>
<html>
<head>
        <meta http-equiv="content-type" content="text/html;charset=utf-8"/>
        <!-- Online here: http://ejohn.org/files/bugs/isObjectLiteral/ -->
        <title>isObjectLiteral</title>
        <style>
        li { background: green; } li.FAIL { background: red; }
        iframe { display: none; }
        </style>
</head>
<body>
<ul id="results"></ul>
<script>

function isObjectLiteral(obj){
        // Implement me!
        return false;

        // Other Solutions:

        // Uses function serialization which doesn't work in all browsers
        //return /^function Object/.test( obj.constructor );

        // Doesn't work with object from other windows
        //return Object.prototype.toString.call(obj) === "[object Object]";
}

// Function serialization is not permitted
// Does not work across all browsers
Function.prototype.toString = function(){};

// The use case that we want to match
log("{}", {}, true);

// Instantiated objects shouldn't be matched
log("new Date", new Date, false);

var fn = function(){};

// Makes the function a little more realistic
// (and harder to detect, incidentally)
fn.prototype = {someMethod: function(){}};

// Functions shouldn't be matched
log("fn", fn, false);

// Again, instantiated objects shouldn't be matched
log("new fn", new fn, false);

/* Note:
 * The restriction against instantiated functions is
 * due to the fact that this method will be used for
 * deep-cloning an object. Instantiated objects will
 * just have their reference copied over, whereas
 * plain objects will need to be completely cloned.
 */

var iframe = document.createElement("iframe");
document.body.appendChild(iframe);

var doc = iframe.contentDocument || iframe.contentWindow.document;
doc.open();
doc.write("<body onload='window.top.iframeDone(Object);'>");
doc.close();

function iframeDone(otherObject){
        // Objects from other windows should be matched
        log("new otherObject", new otherObject, true);
}

function log(msg, a, b) {
  var pass = isObjectLiteral(a) === b ? "PASS" : "FAIL";

  document.getElementById("results").innerHTML +=
        "<li class='" + pass + "'>" + msg + "</li>";
}
</script>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="content-type" content="text/html;charset=utf-8"/>
	<!-- Online here: http://ejohn.org/files/bugs/isObjectLiteral/ -->
	<title>isObjectLiteral</title>
	<style>
	li { background: green; } li.FAIL { background: red; }
	iframe { display: none; }
	</style>
	</head>
	<body>
	<ul id="results"></ul>
	<script>

	function isObjectLiteral(obj){
	// Implement me!
	return false;

	// Other Solutions:

	// Uses function serialization which doesn't work in all browsers
	//return /^function Object/.test( obj.constructor );

	// Doesn't work with object from other windows
	//return Object.prototype.toString.call(obj) === "[object Object]";
	}

	// Function serialization is not permitted
	// Does not work across all browsers
	Function.prototype.toString = function(){};

	// The use case that we want to match
	log("{}", {}, true);

	// Instantiated objects shouldn't be matched
	log("new Date", new Date, false);

	var fn = function(){};

	// Makes the function a little more realistic
	// (and harder to detect, incidentally)
	fn.prototype = {someMethod: function(){}};

	// Functions shouldn't be matched
	log("fn", fn, false);

	// Again, instantiated objects shouldn't be matched
	log("new fn", new fn, false);

	/* Note:
	* The restriction against instantiated functions is
	* due to the fact that this method will be used for
	* deep-cloning an object. Instantiated objects will
	* just have their reference copied over, whereas
	* plain objects will need to be completely cloned.
	*/

	var iframe = document.createElement("iframe");
	document.body.appendChild(iframe);

	var doc = iframe.contentDocument \|\| iframe.contentWindow.document;
	doc.open();
	doc.write("<body onload='window.top.iframeDone(Object);'>");
	doc.close();

	function iframeDone(otherObject){
	// Objects from other windows should be matched
	log("new otherObject", new otherObject, true);
	}

	function log(msg, a, b) {
	var pass = isObjectLiteral(a) === b ? "PASS" : "FAIL";

	document.getElementById("results").innerHTML +=
	"<li class='" + pass + "'>" + msg + "</li>";
	}
	</script>
	</body>
	</html>