跨域 hash 传递是否有问题

[jimwmg]

// bust parameter is added to ensure that repeat messages trigger the callback.
target.location = target_url.replace(/#.*$/, '') + '#' + (+new Date) + (cache_bust++) + '&' + message;
//这里跨域的时候应该有问题吧 是不是应该 target.src = "xxxx"