Node.js开发笔记-7: express跨域问题（Access-Control-Allow-Origin)

//处理跨域问题,添加以下代码

app.all("*", function (req, res, next) {
  res.header('Access-Control-Allow-Origin', '*');
  res.header("Access-Control-Allow-Headers", "Content-Type,Content-Length, Authorization, Accept,X-Requested-With");
  res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
  next();
});