Refresh iframe per button click

I have a script that causes if the iframe could not be loaded show a reporting div of the error:

var iframe = $( '#meuIframe' );
var url = 'http://link.com/iframe.html';

$.get( url, function ( data ) {
    iframe.onload = function () {};
    iframe.src = url;
}).error( function ( err ) {
    $('.errorDiv').show();
});

So far so good, but I wanted to be able to update this iframe for a button. I got it like this:

$("#refresh").attr("src", "http://link.com/iframe.html?"+new Date().getTime());
}

... But the error div does not appear if there is an error, as in the first script. So I tried to do this:

$("#refresh").click(function(){
    var iframe = $( '#meuIframe' );
    var url = 'http://link.com/iframe.html';

    $.get( url, function ( data ) {
    iframe.onload = function () {};
    iframe.attr("src", = url? +new Date().getTime());
    }).error( function ( err ) {
    $('.errorDiv').show();
    });
});

But it does not work. Can you help me?