JAVASCRIPT ONBLUR EVENT
Run 
<html>
    <head>   
        <script>
            function wait()
            {
                document.getElementById("result").innerHTML = "Please enter a value...";
            }
        </script>      
    </head>
    <body>
        <p>Click in the Input Field and then click outside.</p>
        <input type="text" onblur="wait()" placeholder="Your Email..." />
        <div id="result"></div>
    </body>
</html>