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.lastindexof description: Array.prototype.lastIndexOf when 'fromIndex' isn't passed ---*/ var arr = [0, 1, 2, 3, 4]; //'fromIndex' will be set as 4 if not passed by default assert.sameValue(arr.lastIndexOf(0), arr.lastIndexOf(0, 4), 'arr.lastIndexOf(0)'); assert.sameValue(arr.lastIndexOf(2), arr.lastIndexOf(2, 4), 'arr.lastIndexOf(2)'); assert.sameValue(arr.lastIndexOf(4), arr.lastIndexOf(4, 4), 'arr.lastIndexOf(4)');