在对客户端执行响应之前表达中间件

好吧，您可以覆盖send函数：

app.use(function (req, res) {    var send = res.send;    res.send = function (body) { // It might be a little tricky here, because send supports a variety of arguments, and you have to make sure you support all of them!        // Do something with the body...        send.call(this, body);    };});

如果您想支持的不仅仅是调用

send

end

您可以检查connect-livereload以了解如何将脚本添加到任何html输出中。