/* -*- 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: 15.3.5-1.js ECMA Section: 15.3.5 Properties of Function Instances new Function(p1, p2, ..., pn, body ) Description: 15.3.5.1 length The value of the length property is usually an integer that indicates the "typical" number of arguments expected by the function. However, the language permits the function to be invoked with some other number of arguments. The behavior of a function when invoked on a number of arguments other than the number specified by its length property depends on the function. 15.3.5.2 prototype The value of the prototype property is used to initialize the internal [[ Prototype]] property of a newly created object before the Function object is invoked as a constructor for that newly created object. 15.3.5.3 arguments The value of the arguments property is normally null if there is no outstanding invocation of the function in progress (that is, the function has been called but has not yet returned). When a non-internal Function object (15.3.2.1) is invoked, its arguments property is "dynamically bound" to a newly created object that contains the arguments on which it was invoked (see 10.1.6 and 10.1.8). Note that the use of this property is discouraged; it is provided principally for compatibility with existing old code. Author: christine@netscape.com Date: 28 october 1997 */ var SECTION = "15.3.5-1"; var VERSION = "ECMA_1"; startTest(); var TITLE = "Properties of Function Instances"; writeHeaderToLog( SECTION + " "+TITLE); var args = ""; for ( var i = 0; i < 2000; i++ ) { args += "arg"+i; if ( i != 1999 ) { args += ","; } } var s = ""; for ( var i = 0; i < 2000; i++ ) { s += ".0005"; if ( i != 1999 ) { s += ","; } } MyFunc = new Function( args, "var r=0; for (var i = 0; i < MyFunc.length; i++ ) { if ( eval('arg'+i) == void 0) break; else r += eval('arg'+i); }; return r"); MyObject = new Function( args, "for (var i = 0; i < MyFunc.length; i++ ) { if ( eval('arg'+i) == void 0) break; eval('this.arg'+i +'=arg'+i); };"); new TestCase( SECTION, "MyFunc.length", 2000, MyFunc.length ); new TestCase( SECTION, "var MY_OB = eval('MyFunc(s)')", 1, eval("var MY_OB = MyFunc("+s+"); MY_OB") ); new TestCase( SECTION, "MyFunc.prototype.toString()", "[object Object]", MyFunc.prototype.toString() ); new TestCase( SECTION, "typeof MyFunc.prototype", "object", typeof MyFunc.prototype ); new TestCase( SECTION, "MyObject.length", 2000, MyObject.length ); new TestCase( SECTION, "FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1.length", 3, eval("FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1.length") ); new TestCase( SECTION, "FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1()", 3, eval("FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1()") ); new TestCase( SECTION, "FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1(1,2,3,4,5)", 3, eval("FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1(1,2,3,4,5)") ); test();