CREDENTIAL: fetch via POST.

Author: mikewest

specs/credentialmanagement/index.src.html

@@ -263,7 +263,7 @@ <h4 id="examples-password-signin">Password-based Sign-in</h4>
                 return;
               }
               if (credential.type == "<a const>password</a>") {
-                fetch("https://example.com/loginEndpoint", { body: credential.<a>toFormData()</a> })
+                fetch("https://example.com/loginEndpoint", { body: credential.<a>toFormData()</a>, method: "POST" })
                   .then(function (response) {
                     // Notify the user that signin succeeded! Do amazing, signed-in things!
                   });
@@ -314,7 +314,7 @@ <h4 id="examples-federated-signin">Federated Sign-in</h4>
                 // ...
                 }
               } else {
-                fetch("https://example.com/loginEndpoint", { body: credential.<a>toFormData()</a> })
+                fetch("https://example.com/loginEndpoint", { body: credential.<a>toFormData()</a>, method: "POST" })
                   .then(function (response) { ... })
                   .catch(function (response) { ... });
               }
@@ -344,7 +344,7 @@ <h4 id="examples-post-signin">Post-sign-in Confirmation</h4>
           "<a idl for="CredentialData">id</a>": "JaneDoe98",
           "<a idl for="PasswordCredentialData">password</a>": "MfPeRQq5P3yVry68Q4KZMMhB"
         });
-        fetch("https://example.com/sign-in/", { body: credential.<a>toFormData()</a> })
+        fetch("https://example.com/sign-in/", { body: credential.<a>toFormData()</a>, method: "POST" })
           .then(function (response) {
             if (response.status == 200)
               navigator.<a attribute>credentials</a>.<a idl lt="store()">store</a>(credential);