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.every description: > Array.prototype.every - deleting property of prototype causes prototype index property not to be visited on an Array ---*/ var accessed = false; function callbackfn(val, idx, obj) { accessed = true; return idx !== 1; } var arr = [0, , 2]; Object.defineProperty(arr, "0", { get: function() { delete Array.prototype[1]; return 0; }, configurable: true }); Array.prototype[1] = 1; assert(arr.every(callbackfn), 'arr.every(callbackfn) !== true'); assert(accessed, 'accessed !== true');