response.getHeader(name)
读取已排队但未发送到客户端的标头。
该名称不区分大小写。
返回值的类型取决于提供给 response.setHeader()
的参数。
response.setHeader('Content-Type', 'text/html');
response.setHeader('Content-Length', Buffer.byteLength(body));
response.setHeader('Set-Cookie', ['type=ninja', 'language=javascript']);
const contentType = response.getHeader('content-type');
// contentType 是 'text/html'
const contentLength = response.getHeader('Content-Length');
// contentLength 是数字类型
const setCookie = response.getHeader('set-cookie');
// setCookie 是 string[] 类型
Reads out a header that's already been queued but not sent to the client.
The name is case-insensitive. The type of the return value depends
on the arguments provided to response.setHeader()
.
response.setHeader('Content-Type', 'text/html');
response.setHeader('Content-Length', Buffer.byteLength(body));
response.setHeader('Set-Cookie', ['type=ninja', 'language=javascript']);
const contentType = response.getHeader('content-type');
// contentType is 'text/html'
const contentLength = response.getHeader('Content-Length');
// contentLength is of type number
const setCookie = response.getHeader('set-cookie');
// setCookie is of type string[]