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 |   1 <!DOCTYPE html> | 
 |   2 <meta charset="utf-8"> | 
 |   3 <title>IDBCursor.advance() - object store - throw TypeError</title> | 
 |   4 <link rel="author" title="Intel" href="http://www.intel.com"> | 
 |   5 <link rel="help" href="https://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.ht
    ml#widl-IDBCursor-advance-void-unsigned-long-count"> | 
 |   6 <script src="../../../resources/testharness.js"></script> | 
 |   7 <script src="../../../resources/testharnessreport.js"></script> | 
 |   8 <script src="support.js"></script> | 
 |   9 <div id="log"></div> | 
 |  10 <script> | 
 |  11     var db, | 
 |  12         t = async_test(), | 
 |  13         records = [{ pKey: "primaryKey_0"}, | 
 |  14                    { pKey: "primaryKey_1"}]; | 
 |  15  | 
 |  16     var open_rq = createdb(t); | 
 |  17     open_rq.onupgradeneeded = function (event) { | 
 |  18         db = event.target.result; | 
 |  19         var objStore = db.createObjectStore("store", {keyPath:"pKey"}); | 
 |  20         for (var i = 0; i < records.length; i++) { | 
 |  21             objStore.add(records[i]); | 
 |  22         } | 
 |  23     } | 
 |  24  | 
 |  25     open_rq.onsuccess = function (event) { | 
 |  26         var txn = db.transaction("store", "readwrite"); | 
 |  27         var rq = txn.objectStore("store").openCursor(); | 
 |  28         rq.onsuccess = t.step_func(function(event) { | 
 |  29             var cursor = event.target.result; | 
 |  30             assert_true(cursor instanceof IDBCursor); | 
 |  31  | 
 |  32             assert_throws(new TypeError(), function() { | 
 |  33                 cursor.advance(0); | 
 |  34             }, "Calling advance() with count argument 0 should throw TypeError."
    ); | 
 |  35  | 
 |  36             t.done(); | 
 |  37         }); | 
 |  38     } | 
 |  39 </script> | 
 |  40  | 
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