Strict mode Passingnon-Strict mode Passing
Features:
- ∅
// 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.indexof description: > Array.prototype.indexOf - properties can be added to prototype after current position are visited on an Array ---*/ var arr = [0, , 2]; Object.defineProperty(arr, "0", { get: function() { Object.defineProperty(Array.prototype, "1", { get: function() { return 6.99; }, configurable: true }); return 0; }, configurable: true }); assert.sameValue(arr.indexOf(6.99), 1, 'arr.indexOf(6.99)');