JSTests/test262/test/built-ins/Array/prototype/filter/15.4.4.20-4-12.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: 15.4.4.20-4-12
description: Array.prototype.filter - 'callbackfn' is a function
---*/

        function callbackfn(val, idx, obj) {
            if (idx === 1) {
                return val === 9;
            }
            return false;
        }

        var newArr = [11, 9].filter(callbackfn);

assert.sameValue(newArr.length, 1, 'newArr.length');
assert.sameValue(newArr[0], 9, 'newArr[0]');