delete.js revision 877:cf4d2252d444 
1/*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * Check delete operator.
26 *
27 * @test
28 * @run
29 */
30
31var obj = { foo: 3, bar: "hello" };
32
33print("foo" in obj);
34print(obj.foo);
35print(delete obj.foo);
36print("foo" in obj);
37
38print("bar" in obj);
39print(obj.bar);
40print(delete obj["bar"]);
41print("bar" in obj);
42
43print(delete obj.junk);
44print(delete obj["junk"]);
45print(delete obj[2]);
46
47x = 3;
48print(delete x);
49print("x" in this);
50
51// deleting literals
52print(delete 2);
53print(delete "hello");
54print(delete true);
55print(delete this);
56
57function func() {
58    print(delete this);
59}
60
61var o = {};
62o.func = func;
63o.func();
64