res.send，之后如何退出? [英] res.send, how to exit after?

问题描述

在调用res.send()之后，是否需要调用return或以某种方式退出回调函数，以确保没有其他代码执行?就像在PHP中调用标头函数时一样，您需要在此之后调用exit，以防止进一步的代码被执行.

After calling res.send(), is there a need to call a return or somehow exit the callback function in order to make sure no further code executes? Like how when calling a header function in PHP, you need to call exit after that to prevent further code from being executed.

app.post('/create', function(req, res) {
  if(req.headers['x-api-key'] === undefined) {
     res.send({msg: "Goodbye"});
  }
  // other code that should only be processed if it has that header.

});

推荐答案

只需使用return:

Just use return:

app.post('/create', function(req, res) {
  if(req.headers['x-api-key'] === undefined)
    return res.send({msg: "Goodbye"});

  // other code that should only be processed if it has that header.

});

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