Indicates whether this Response was fullfilled by a Service Worker's Fetch Handler (i.e. via FetchEvent.respondWith).
Returns the value of the header matching the name. The name is case insensitive. If multiple headers have the same name
(except set-cookie), they are returned as a list separated by , . For set-cookie, the \n separator is used. If
no headers are found, null is returned.
Name of the header.
An object with the response HTTP headers. The header names are lower-cased. Note that this method does not return
security-related headers, including cookie-related ones. You can use
response.allHeaders() for complete list of
headers that include cookie information.
An array with all the request HTTP headers associated with this response. Unlike
response.allHeaders(), header names are NOT
lower-cased. Headers with multiple entries, such as Set-Cookie, appear in the array multiple times.
Returns SSL and other security information.
An object with all the response HTTP headers associated with this response.