JSTests/test262/test/built-ins/Array/prototype/filter/15.4.4.20-1-13.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-array.prototype.filter
es5id: 15.4.4.20-1-13
description: Array.prototype.filter applied to the JSON object
---*/

        function callbackfn(val, idx, obj) {
            return '[object JSON]' === Object.prototype.toString.call(JSON);
        }

            JSON.length = 1;
            JSON[0] = 1;
            var newArr = Array.prototype.filter.call(JSON, callbackfn);

assert.sameValue(newArr[0], 1, 'newArr[0]');