jquery iframe contents

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
</head>
<body>
<div class="container-fluid">
    <div class="container">
        <button class="btn btn-info esmolink">Click here to test</button>
        <iframe id="esmoIframeContainer" src="https://approvals.acme.graphics" allowfullscreen="true" width="100%"  height="500px"></iframe>
    </div>
</div>
</body>
</html>

JavaScript

$(document).ready(function() {
        $("body").on("click","esmolink",function() {
            var doc = $('#esmoIframeContainer').contents().find("body").html("");
            console.log(doc);
        });

    });