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.map description: Array.prototype.map - deleted properties in step 2 are visible here ---*/ function callbackfn(val, idx, obj) { if (idx === 2) { return false; } else { return true; } } var obj = { 2: 6.99, 8: 19 }; Object.defineProperty(obj, "length", { get: function() { delete obj[2]; return 10; }, configurable: true }); var testResult = Array.prototype.map.call(obj, callbackfn); assert.sameValue(typeof testResult[2], "undefined", 'typeof testResult[2]');