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 - non-existent property wouldn't be called ---*/ assert.sameValue([0, , 2].indexOf(undefined), -1, '[0, , 2].indexOf(undefined)');