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 - 'length' is an object that has an own valueOf method that returns an object and toString method that returns a string ---*/ function callbackfn(val, idx, obj) { return val < 10; } var firstStepOccured = false; var secondStepOccured = false; var obj = { 0: 11, 1: 9, length: { valueOf: function() { firstStepOccured = true; return {}; }, toString: function() { secondStepOccured = true; return '2'; } } }; var newArr = Array.prototype.map.call(obj, callbackfn); assert.sameValue(newArr.length, 2, 'newArr.length'); assert(firstStepOccured, 'firstStepOccured !== true'); assert(secondStepOccured, 'secondStepOccured !== true');