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 - element to be retrieved is own accessor property that overrides an inherited data property on an Array ---*/ var arr = []; Array.prototype[0] = false; Object.defineProperty(arr, "0", { get: function() { return true; }, configurable: true }); assert.sameValue(arr.indexOf(true), 0, 'arr.indexOf(true)');