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res.headersSent

res.headersSent

Boolean property that indicates if the app sent HTTP headers for the response.

app.get('/', function (req, res) {
  console.log(res.headersSent); // false
  res.send('OK');
  console.log(res.headersSent); // true
});

Links:

http://expressjs.com/en/4x/api.html#res.headersSent

doc_Express

2025-01-10 15:47:30

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