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.some description: > Array.prototype.some visits deleted element in array after the call when same index is also present in prototype ---*/ function callbackfn(val, idx, obj) { delete arr[4]; if (val < 5) return false; else return true; } Array.prototype[4] = 5; var arr = [1, 2, 3, 4, 5]; var res = arr.some(callbackfn); delete Array.prototype[4]; assert.sameValue(res, true, 'res');