1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* -*- 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: 15.5.4.4-4.js
ECMA Section: 15.5.4.4 String.prototype.charAt(pos)
Description: Returns a string containing the character at position
pos in the string. If there is no character at that
string, the result is the empty string. The result is
a string value, not a String object.
When the charAt method is called with one argument,
pos, the following steps are taken:
1. Call ToString, with this value as its argument
2. Call ToInteger pos
3. Compute the number of characters in Result(1)
4. If Result(2) is less than 0 is or not less than
Result(3), return the empty string
5. Return a string of length 1 containing one character
from result (1), the character at position Result(2).
Note that the charAt function is intentionally generic;
it does not require that its this value be a String
object. Therefore it can be transferred to other kinds
of objects for use as a method.
This tests assiging charAt to primitive types..
Author: christine@netscape.com
Date: 2 october 1997
*/
var SECTION = "15.5.4.4-4";
var VERSION = "ECMA_2";
startTest();
var TITLE = "String.prototype.charAt";
writeHeaderToLog( SECTION + " "+ TITLE);
/*
new TestCase( SECTION, "x = null; x.__proto.charAt = String.prototype.charAt; x.charAt(0)", "n", eval("x=null; x.__proto__.charAt = String.prototype.charAt; x.charAt(0)") );
new TestCase( SECTION, "x = null; x.__proto.charAt = String.prototype.charAt; x.charAt(1)", "u", eval("x=null; x.__proto__.charAt = String.prototype.charAt; x.charAt(1)") );
new TestCase( SECTION, "x = null; x.__proto.charAt = String.prototype.charAt; x.charAt(2)", "l", eval("x=null; x.__proto__.charAt = String.prototype.charAt; x.charAt(2)") );
new TestCase( SECTION, "x = null; x.__proto.charAt = String.prototype.charAt; x.charAt(3)", "l", eval("x=null; x.__proto__.charAt = String.prototype.charAt; x.charAt(3)") );
new TestCase( SECTION, "x = undefined; x.__proto.charAt = String.prototype.charAt; x.charAt(0)", "u", eval("x=undefined; x.__proto__.charAt = String.prototype.charAt; x.charAt(0)") );
new TestCase( SECTION, "x = undefined; x.__proto.charAt = String.prototype.charAt; x.charAt(1)", "n", eval("x=undefined; x.__proto__.charAt = String.prototype.charAt; x.charAt(1)") );
new TestCase( SECTION, "x = undefined; x.__proto.charAt = String.prototype.charAt; x.charAt(2)", "d", eval("x=undefined; x.__proto__.charAt = String.prototype.charAt; x.charAt(2)") );
new TestCase( SECTION, "x = undefined; x.__proto.charAt = String.prototype.charAt; x.charAt(3)", "e", eval("x=undefined; x.__proto__.charAt = String.prototype.charAt; x.charAt(3)") );
*/
new TestCase( SECTION, "x = false; x.__proto.charAt = String.prototype.charAt; x.charAt(0)", "f", eval("x=false; x.__proto__.charAt = String.prototype.charAt; x.charAt(0)") );
new TestCase( SECTION, "x = false; x.__proto.charAt = String.prototype.charAt; x.charAt(1)", "a", eval("x=false; x.__proto__.charAt = String.prototype.charAt; x.charAt(1)") );
new TestCase( SECTION, "x = false; x.__proto.charAt = String.prototype.charAt; x.charAt(2)", "l", eval("x=false; x.__proto__.charAt = String.prototype.charAt; x.charAt(2)") );
new TestCase( SECTION, "x = false; x.__proto.charAt = String.prototype.charAt; x.charAt(3)", "s", eval("x=false; x.__proto__.charAt = String.prototype.charAt; x.charAt(3)") );
new TestCase( SECTION, "x = false; x.__proto.charAt = String.prototype.charAt; x.charAt(4)", "e", eval("x=false; x.__proto__.charAt = String.prototype.charAt; x.charAt(4)") );
new TestCase( SECTION, "x = true; x.__proto.charAt = String.prototype.charAt; x.charAt(0)", "t", eval("x=true; x.__proto__.charAt = String.prototype.charAt; x.charAt(0)") );
new TestCase( SECTION, "x = true; x.__proto.charAt = String.prototype.charAt; x.charAt(1)", "r", eval("x=true; x.__proto__.charAt = String.prototype.charAt; x.charAt(1)") );
new TestCase( SECTION, "x = true; x.__proto.charAt = String.prototype.charAt; x.charAt(2)", "u", eval("x=true; x.__proto__.charAt = String.prototype.charAt; x.charAt(2)") );
new TestCase( SECTION, "x = true; x.__proto.charAt = String.prototype.charAt; x.charAt(3)", "e", eval("x=true; x.__proto__.charAt = String.prototype.charAt; x.charAt(3)") );
new TestCase( SECTION, "x = NaN; x.__proto.charAt = String.prototype.charAt; x.charAt(0)", "N", eval("x=NaN; x.__proto__.charAt = String.prototype.charAt; x.charAt(0)") );
new TestCase( SECTION, "x = NaN; x.__proto.charAt = String.prototype.charAt; x.charAt(1)", "a", eval("x=NaN; x.__proto__.charAt = String.prototype.charAt; x.charAt(1)") );
new TestCase( SECTION, "x = NaN; x.__proto.charAt = String.prototype.charAt; x.charAt(2)", "N", eval("x=NaN; x.__proto__.charAt = String.prototype.charAt; x.charAt(2)") );
new TestCase( SECTION, "x = 123; x.__proto.charAt = String.prototype.charAt; x.charAt(0)", "1", eval("x=123; x.__proto__.charAt = String.prototype.charAt; x.charAt(0)") );
new TestCase( SECTION, "x = 123; x.__proto.charAt = String.prototype.charAt; x.charAt(1)", "2", eval("x=123; x.__proto__.charAt = String.prototype.charAt; x.charAt(1)") );
new TestCase( SECTION, "x = 123; x.__proto.charAt = String.prototype.charAt; x.charAt(2)", "3", eval("x=123; x.__proto__.charAt = String.prototype.charAt; x.charAt(2)") );
test();
|