Browsers do support PUT and DELETE, but it is HTML that doesn’t.
This is because HTML 4.01 and the final W3C HTML 5.0 spec both say that the only HTTP methods that their form elements should allow are GET and POST.
Web pages trying to use forms with method="PUT" or method="DELETE" would fall back to the default method, GET for all current browsers. This breaks the web applications’ attempts to use appropriate methods in HTML forms for the intended action, and ends up giving a worse result — GET being used to delete things!
PUT as a form method makes no sense, you wouldn’t want to PUT a form payload. DELETE only makes sense if there is no payload, so it doesn’t make much sense with forms either.
Conclusion
If using web browser to test a rest api of http method PUT or DELETE, it will not work and would fall back to default GET method and hence the REST API URL will not give proper response.
