res.append()

res.append(field [, value])

res.append() is supported by Express v4.11.0+

Appends the specified value to the HTTP response header field. If the header is not already set, it creates the header with the specified value. The value parameter can be a string or an array.

Note: calling res.set() after res.append() will reset the previously-set header value.

res.append('Link', ['<http://localhost/>', '<http://localhost:3000/>']);
res.append('Set-Cookie', 'foo=bar; Path=/; HttpOnly');
res.append('Warning', '199 Miscellaneous warning');

Links:

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

doc_Express

2025-01-10 15:47:30

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