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 returns -1 if 'length' is 0 (subclassed Array, length overridden with obj with valueOf) ---*/ var i = Array.prototype.indexOf.call({ length: { valueOf: function() { return 0; } } }, 1); assert.sameValue(i, -1, 'i');