Edit in JSFiddle

$("#address").on('blur',function(){
$('#map').html("");
$('#map').append("<iframe width='300' height='300' src='https://www.google.com/maps?q="+$(this).val()+"&output=embed'></iframe>");
});
<textarea  class="form-control" id="address" name="address" placeholder="Please enter Address hereā€¦" rows="5"></textarea>
<div id="map"></div>