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 - deleted properties in step 5 are visible here on an Array ---*/ var arr = []; arr[10] = "10"; arr.length = 20; var fromIndex = { valueOf: function() { delete arr[10]; return 3; } }; assert.sameValue(arr.indexOf("10", fromIndex), -1, 'arr.indexOf("10", fromIndex)');