|  | <!DOCTYPE html> | 
|  | <meta charset="utf-8"> | 
|  | <title>IDBDatabase.createObjectStore() - attempting to create an existing object store with a different keyPath throw ConstraintError </title> | 
|  | <link rel="author" title="Intel" href="http://www.intel.com"> | 
|  | <link rel="help" href="https://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#widl-IDBDatabase-createObjectStore-IDBObjectStore-DOMString-name-IDBObjectStoreParameters-optionalParameters"> | 
|  | <script src="/resources/testharness.js"></script> | 
|  | <script src="/resources/testharnessreport.js"></script> | 
|  | <script src="support.js"></script> | 
|  | <div id="log"></div> | 
|  | <script> | 
|  | var t = async_test(), | 
|  | open_rq = createdb(t); | 
|  |  | 
|  | open_rq.onupgradeneeded = function (e) { | 
|  | var db = e.target.result; | 
|  | db.createObjectStore("store"); | 
|  | assert_throws("ConstraintError", function(){ | 
|  | db.createObjectStore("store", { | 
|  | keyPath: "key1", | 
|  | }); | 
|  | }); | 
|  | t.done(); | 
|  | } | 
|  | </script> | 
|  |  |