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 applied to number primitive ---*/ Number.prototype[1] = isNaN; Number.prototype.length = 2; assert.sameValue(Array.prototype.lastIndexOf.call(5, isNaN), 1, 'Array.prototype.lastIndexOf.call(5, isNaN)');