| /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| |
| /** |
| * File Name: function-001.js |
| * Description: |
| * |
| * http://scopus.mcom.com/bugsplat/show_bug.cgi?id=324455 |
| * |
| * Earlier versions of JavaScript supported access to the arguments property |
| * of the function object. This property held the arguments to the function. |
| * function f() { |
| * return f.arguments[0]; // deprecated |
| * } |
| * var x = f(3); // x will be 3 |
| * |
| * This feature is not a part of the final ECMA standard. Instead, scripts |
| * should simply use just "arguments": |
| * |
| * function f() { |
| * return arguments[0]; // okay |
| * } |
| * |
| * var x = f(3); // x will be 3 |
| * |
| * Again, this feature was motivated by performance concerns. Access to the |
| * arguments property is not threadsafe, which is of particular concern in |
| * server environments. Also, the compiler can generate better code for |
| * functions because it can tell when the arguments are being accessed only by |
| * name and avoid setting up the arguments object. |
| * |
| * Author: christine@netscape.com |
| * Date: 11 August 1998 |
| */ |
| var SECTION = "function-001.js"; |
| var VERSION = "JS1_4"; |
| var TITLE = "Accessing the arguments property of a function object"; |
| var BUGNUMBER="324455"; |
| startTest(); |
| writeHeaderToLog( SECTION + " "+ TITLE); |
| |
| new TestCase( |
| SECTION, |
| "return function.arguments", |
| "P", |
| TestFunction_2("P", "A","S","S")[0] +""); |
| |
| |
| new TestCase( |
| SECTION, |
| "return arguments", |
| "P", |
| TestFunction_1( "P", "A", "S", "S" )[0] +""); |
| |
| new TestCase( |
| SECTION, |
| "return arguments when function contains an arguments property", |
| "PASS", |
| TestFunction_3( "P", "A", "S", "S" ) +""); |
| |
| new TestCase( |
| SECTION, |
| "return function.arguments when function contains an arguments property", |
| "[object Arguments]", |
| TestFunction_4( "F", "A", "I", "L" ) +""); |
| |
| test(); |
| |
| function TestFunction_1( a, b, c, d, e ) { |
| return arguments; |
| } |
| |
| function TestFunction_2( a, b, c, d, e ) { |
| return TestFunction_2.arguments; |
| } |
| |
| function TestFunction_3( a, b, c, d, e ) { |
| var arguments = "PASS"; |
| return arguments; |
| } |
| |
| function TestFunction_4( a, b, c, d, e ) { |
| var arguments = "FAIL"; |
| return TestFunction_4.arguments; |
| } |
| |