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 throws TypeError exception when 'length' is an object with toString and valueOf methods that don�t return primitive values ---*/ var toStringAccessed = false; var valueOfAccessed = false; var obj = { length: { toString: function() { toStringAccessed = true; return {}; }, valueOf: function() { valueOfAccessed = true; return {}; } } }; assert.throws(TypeError, function() { Array.prototype.indexOf.call(obj); }); assert(toStringAccessed, 'toStringAccessed'); assert(valueOfAccessed, 'valueOfAccessed');