javascript:(function(){
    var ifr = document.createElement('iframe');
    ifr.src = 'data:text/html;charset=utf-8,%3Chtml%3E%0D%0A%3Cbody%3E%0D%0A%3Cscript%20type%3D%22text%2Fjavascript%22%3E%0D%0Awindow.addEventListener(%22message%22%2C%20receiveMessage%2C%20false)%3B%0D%0Afunction%20receiveMessage(e)%20%7B%0D%0A%20%20%20%20alert(localStorage%5B%22aaa%22%5D)%3B%0D%0A%20%20%20%20localStorage%5B%22aaa%22%5D%20%3D%20e.data%3B%0D%0A%20%20%20%20alert(localStorage%5B%22aaa%22%5D)%3B%0D%0A%7D%0D%0A%3C%2Fscript%3E%0D%0A%3C%2Fbody%3E%0D%0A%3C%2Fhtml%3E%0D%0A';
    document.body.appendChild(ifr);
    ifr.addEventListener('load', function() {
        alert('post');
        ifr.contentWindow.postMessage('aaaaaaaaaa', '*');
    }, false);
})()