Edit in JSFiddle

$(document).ready(function () {
    $(document).on('click', '#getHtml', function (event) {
      var content=$(".test").html();
        alert(content);
    });
});

<h1>Jquery html() will get first matched selector content among many</h1>
<div class="test">
    This is first div with test class
 </div>
<div class="test">
    This is second div with test class
 </div>
<div class="test">
    This is third div with test class
 </div>
<input type="submit" value="get Html" id="getHtml" />