play.html

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<link rel="shortcut icon" type="image/png" href="http://jsonlogic.com/images/favicon.png?v=1445437254" />

	<title>Test JsonLogic in the Browser</title>
	<!-- Latest compiled and minified CSS -->
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

	<!-- Optional theme -->
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
	<style>
		#rule, #data, #output{
			height:300px;
			margin:0 0 10px;
		}
	</style>
</head>
<body>
	<div style="background-color:#337ab7;color:white;">
		<div class="container">
			<img src="http://jsonlogic.com/images/jsonlogic-white.png" style="height:70px;float:right;"/>
			<h1>Test JsonLogic in your Browser</h1>
		</div>
	</div>


	<div class="container">
		<div class="row">
			<div class="col-sm-4">
				<div class="form-group">
					<label for="rule">Rule:</label>
					<textarea required class="form-control" id="rule"></textarea>
					<div class="btn btn-default" id="lint-rule">Lint</div>
					<div class="alert" id="message-rule" style="display:none;"></div>
				</div>
			</div>
			<div class="col-sm-4">
				<div class="form-group">
					<label for="rule">Data:</label>
					<textarea class="form-control" id="data"></textarea>
					<div class="btn btn-default" id="lint-data">Lint</div>
					<div class="alert" id="message-data" style="display:none;"></div>
				</div>
			</div>
			<div class="col-sm-4">
				<div class="form-group">
					<label for="rule">Output:</label>
					<pre id="output"></pre>
					<div class="btn btn-primary" id="compute">Compute</div>
					<div class="alert alert-danger" id="message-compute" style="display:none;"></div>
				</div>
			</div>
		</div>
	</div>

	<!-- Latest compiled and minified JavaScript -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
	<script src="dist/jsonLogic.min.js"></script>
	<script>
		function lint(element){
			var $element = $(element),
				text = $element.val(),
				output,
				$message = $("#message-" + $element.attr("id") );

			if(text === ""){
				if($element.attr("required")){
					$message.removeClass("alert-success").addClass("alert-danger")
						.text("Can't be blank").fadeIn();
					return false;
				}else{
					$message.removeClass("alert-danger").addClass("alert-success").text("OK (null)").fadeIn();
					return true;
				}
			}

			try{
				output = JSON.parse(text);
				$message.removeClass("alert-danger").addClass("alert-success").text("OK").fadeIn();
				return true;
			}catch(e){
				$message.removeClass("alert-success").addClass("alert-danger").text(e.message).fadeIn();
				return false;
			}

		}

		$("#compute").click(function(){
			if(lint("#rule") && lint("#data")){
				var rule = JSON.parse($("#rule").val()),
					data = $("#data").val() === "" ? null : JSON.parse($("#data").val()),
					output;
				try{
					output = jsonLogic.apply(rule, data);
					console.log(output);
					$("#message-compute").fadeOut();
					$("#output").text( JSON.stringify(output, null, 4) );
				}catch(e){
					$("#output").text("");
					$("#message-compute").text(e.message).fadeIn();
				}
			}
			//else: They make their own noise.
		});

		$("#lint-rule").click(function(){ lint("#rule"); });
		$("#lint-data").click(function(){ lint("#data"); });

	</script>
</body>
</html>