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  <div id="hd"><h1><span class="h1">JSCoverage</span><br><span class="tag">code coverage for JavaScript</span></h1></div>  
  <div id="bd">
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        <p>
        JSCoverage is a tool that measures code coverage for
        JavaScript programs.
        </p>
        <p>
        <dfn>Code coverage</dfn> statistics show which lines of a program have
        been executed (and which have been missed).  This information is useful
        for constructing comprehensive test suites (hence, it is often called
        <dfn>test coverage</dfn>).
        </p>
        <p>
        JSCoverage works by instrumenting the JavaScript code used in web
        pages.  Code coverage statistics are collected while the instrumented
        JavaScript code is executed in a web browser.
        </p>
        <p>
        JSCoverage supports the complete language syntax described in the
        <cite>ECMAScript Language Specification</cite> (ECMA-262, 3rd edition).
        JSCoverage works with any modern standards-compliant web browser -
        including Internet Explorer (IE 6, 7, and 8), Firefox,
        Opera, Safari, and Google Chrome - on Microsoft Windows and GNU/Linux.
        </p>
        <p>
        JSCoverage is free software, distributed under the
        <a href="license.html">GNU General Public License version 2</a>.
        </p>

        <h2>Latest News <a href="http://siliconforks.com/jscoverage/news.xml" type="application/rss+xml" title="RSS feed for JSCoverage"><img src="feed-icon-14x14.png" alt="RSS feed"></a></h2>

        <h3><a name="20100426">April 26, 2010 - New blog</a></h3>
        <p>
        If you would like to see some case studies showing how to use JSCoverage in practice, take a look at the new <a href="http://blog.siliconforks.com/">blog</a>.
        This week there will be a series of articles about using JSCoverage with various JavaScript testing frameworks.
        The <a href="http://blog.siliconforks.com/2010/04/26/jscoverage-scriptaculous/">first article</a> looks at using JSCoverage with the <a href="http://script.aculo.us">script.aculo.us</a> test suite.
        </p>

        <h3><a name="20100424">April 24, 2010 - JSCoverage 0.5</a></h3>
        <p>
        JSCoverage 0.5 is available for <a href="http://siliconforks.com/jscoverage/download.html">download</a>.
        </p>
        <p>
        This release contains a number of new features and bug fixes:
        </p>
        <ul class="list">
        <li>
        A new mode of operation, called "window mode", allows you to run code in a new browser window (or tab).
        </li>
        <li>
        Code coverage statistics can now be generated for applications based on
        the Mozilla platform using the <code>--mozilla</code> option (thanks to
        Murali Nandigama for help creating this).
        </li>
        <li>
        The method used to calculate overall percentage code coverage for all
        files has changed.  Previously, the calculation was done using an
        unweighted average: each file's percentage code coverage contributed
        equally to the total, regardless of the number of lines of code in the
        file.  Now, the calculation is done using a weighted average.  This
        fixes
        <a href="http://siliconforks.com/jscoverage/bugs/6">bug #6</a> (thanks to
        Liu Cougar).
        </li>
        <li>
        Contiguous lines in the "Missing" column are now grouped together (thanks to
        Liu Cougar).
        </li>
        <li>
        The "Source" tab is no longer empty when code being tested throws an
        uncaught exception
        (fixing <a href="http://siliconforks.com/jscoverage/bugs/5">bug #5</a>)
        </li>
        <li>
        Previously, certain uses of the <code>new</code> operator were
        instrumented incorrectly; this has now been fixed
        (thanks to Guillaume Lung).
        </li>
        <li>
        The <code>jscoverage-server</code> program now allows more characters in
        URLs (thanks to Guillaume Lung).
        </li>
        <li>
        The <code>jscoverage-server</code> program now handles HTTP headers with
        empty values (thanks to Velo).
        </li>
        <li>
        The <code>jscoverage</code> program now refuses to instrument code which
        has already been instrumented (thanks to Velo).
        </li>
        <li>
        URLs containing spaces now work correctly (thanks to Igor Papkov).
        </li>
        <li>
        Previously, on Windows, the <code>jscoverage</code> program
        was unable to instrument a directory in a drive root; this has now been
        fixed.
        </li>
        <li>
        Encoded URLs are now handled better in the query string.
        </li>
        <li>
        A limitation of 65,535 lines per file and 65,535 characters per line has
        been removed.
        </li>
        <li>
        Floating-point numbers are now handled with improved precision.
        </li>
        <li>
        The <code>jscoverage-server</code> program can no longer bind to the same port multiple times on Windows.
        </li>
        <li>
        Some bugs in <code>jscoverage-server</code>'s handling of the "chunked"
        Transfer-Encoding have been fixed.
        </li>
        <li>
        Compilation under Cygwin now uses the <code>-mno-cygwin</code> flag.
        </li>
        <li>
        The wire format used for submitting coverage reports for storage by
        <code>jscoverage-server</code> has changed.  (This change will not have
        any visible effects for most users; it will only be of interest to those
        who have written code which parses that format.)
        </li>
        </ul>

        <p>
        <a href="news.html">All news items...</a>
        </p>
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      <li><a href="manual.html">Documentation</a>
      <li><a href="demo.html">Demo</a>
      <li><a href="http://siliconforks.com/jscoverage/download.html">Download</a>
      <li><a href="faq.html">FAQ</a>
      <li><a href="help.html">Help</a>
      <li><a href="license.html">License</a>
      <li><a href="links.html">Links</a>
      <li><a href="users.html">Users</a>
      <li><a href="http://siliconforks.com/jscoverage/bugs/">Bug tracker</a>
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      Copyright &copy; 2007, 2008, 2009, 2010 <a href="http://siliconforks.com/"><img src="siliconforks-16x16.png" width="16" height="16" class="icon" alt="Silicon Forks"></a> <a href="http://siliconforks.com/">siliconforks.com</a><br>
      <a href="mailto:jscoverage@siliconforks.com">jscoverage@siliconforks.com</a>
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1	siliconforks	2	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
2			<html>
3			<head>
4			<title>JSCoverage - code coverage for JavaScript</title>
5			<link rel="stylesheet" type="text/css" href="reset-fonts-grids.css">
6			<link rel="stylesheet" type="text/css" href="style.css">
7			</head>
8			<body>
9			<div id="doc3" class="yui-t5">
10	siliconforks	138	<div id="hd"><h1><span class="h1">JSCoverage</span><br><span class="tag">code coverage for JavaScript</span></h1></div>
11	siliconforks	2	<div id="bd">
12			<div id="yui-main">
13			<div id="jscoverage-main" class="yui-b">
14			<p>
15	siliconforks	76	JSCoverage is a tool that measures code coverage for
16			JavaScript programs.
17	siliconforks	2	</p>
18			<p>
19	siliconforks	76	<dfn>Code coverage</dfn> statistics show which lines of a program have
20			been executed (and which have been missed). This information is useful
21	siliconforks	217	for constructing comprehensive test suites (hence, it is often called
22	siliconforks	76	<dfn>test coverage</dfn>).
23			</p>
24			<p>
25	siliconforks	2	JSCoverage works by instrumenting the JavaScript code used in web
26			pages. Code coverage statistics are collected while the instrumented
27			JavaScript code is executed in a web browser.
28			</p>
29			<p>
30	siliconforks	217	JSCoverage supports the complete language syntax described in the
31			<cite>ECMAScript Language Specification</cite> (ECMA-262, 3rd edition).
32	siliconforks	2	JSCoverage works with any modern standards-compliant web browser -
33	siliconforks	506	including Internet Explorer (IE 6, 7, and 8), Firefox,
34	siliconforks	291	Opera, Safari, and Google Chrome - on Microsoft Windows and GNU/Linux.
35	siliconforks	2	</p>
36			<p>
37			JSCoverage is free software, distributed under the
38	siliconforks	217	<a href="license.html">GNU General Public License version 2</a>.
39	siliconforks	2	</p>
40	siliconforks	150
41			<h2>Latest News <a href="http://siliconforks.com/jscoverage/news.xml" type="application/rss+xml" title="RSS feed for JSCoverage"><img src="feed-icon-14x14.png" alt="RSS feed"></a></h2>
42
43	siliconforks	567	<h3><a name="20100426">April 26, 2010 - New blog</a></h3>
44			<p>
45			If you would like to see some case studies showing how to use JSCoverage in practice, take a look at the new <a href="http://blog.siliconforks.com/">blog</a>.
46			This week there will be a series of articles about using JSCoverage with various JavaScript testing frameworks.
47	siliconforks	568	The <a href="http://blog.siliconforks.com/2010/04/26/jscoverage-scriptaculous/">first article</a> looks at using JSCoverage with the <a href="http://script.aculo.us">script.aculo.us</a> test suite.
48	siliconforks	567	</p>
49
50	siliconforks	561	<h3><a name="20100424">April 24, 2010 - JSCoverage 0.5</a></h3>
51	siliconforks	150	<p>
52	siliconforks	561	JSCoverage 0.5 is available for <a href="http://siliconforks.com/jscoverage/download.html">download</a>.
53	siliconforks	150	</p>
54			<p>
55	siliconforks	561	This release contains a number of new features and bug fixes:
56	siliconforks	150	</p>
57			<ul class="list">
58			<li>
59	siliconforks	561	A new mode of operation, called "window mode", allows you to run code in a new browser window (or tab).
60			</li>
61	siliconforks	415	<li>
62	siliconforks	561	Code coverage statistics can now be generated for applications based on
63			the Mozilla platform using the <code>--mozilla</code> option (thanks to
64			Murali Nandigama for help creating this).
65	siliconforks	150	</li>
66			<li>
67	siliconforks	561	The method used to calculate overall percentage code coverage for all
68			files has changed. Previously, the calculation was done using an
69			unweighted average: each file's percentage code coverage contributed
70			equally to the total, regardless of the number of lines of code in the
71			file. Now, the calculation is done using a weighted average. This
72			fixes
73			<a href="http://siliconforks.com/jscoverage/bugs/6">bug #6</a> (thanks to
74			Liu Cougar).
75	siliconforks	150	</li>
76			<li>
77	siliconforks	561	Contiguous lines in the "Missing" column are now grouped together (thanks to
78			Liu Cougar).
79	siliconforks	150	</li>
80			<li>
81	siliconforks	561	The "Source" tab is no longer empty when code being tested throws an
82			uncaught exception
83			(fixing <a href="http://siliconforks.com/jscoverage/bugs/5">bug #5</a>)
84	siliconforks	150	</li>
85	siliconforks	415	<li>
86	siliconforks	561	Previously, certain uses of the <code>new</code> operator were
87			instrumented incorrectly; this has now been fixed
88			(thanks to Guillaume Lung).
89	siliconforks	415	</li>
90			<li>
91	siliconforks	561	The <code>jscoverage-server</code> program now allows more characters in
92			URLs (thanks to Guillaume Lung).
93	siliconforks	415	</li>
94			<li>
95	siliconforks	561	The <code>jscoverage-server</code> program now handles HTTP headers with
96			empty values (thanks to Velo).
97	siliconforks	415	</li>
98	siliconforks	561	<li>
99			The <code>jscoverage</code> program now refuses to instrument code which
100			has already been instrumented (thanks to Velo).
101			</li>
102			<li>
103			URLs containing spaces now work correctly (thanks to Igor Papkov).
104			</li>
105			<li>
106			Previously, on Windows, the <code>jscoverage</code> program
107			was unable to instrument a directory in a drive root; this has now been
108			fixed.
109			</li>
110			<li>
111			Encoded URLs are now handled better in the query string.
112			</li>
113			<li>
114			A limitation of 65,535 lines per file and 65,535 characters per line has
115			been removed.
116			</li>
117			<li>
118			Floating-point numbers are now handled with improved precision.
119			</li>
120			<li>
121			The <code>jscoverage-server</code> program can no longer bind to the same port multiple times on Windows.
122			</li>
123			<li>
124			Some bugs in <code>jscoverage-server</code>'s handling of the "chunked"
125			Transfer-Encoding have been fixed.
126			</li>
127			<li>
128			Compilation under Cygwin now uses the <code>-mno-cygwin</code> flag.
129			</li>
130			<li>
131			The wire format used for submitting coverage reports for storage by
132			<code>jscoverage-server</code> has changed. (This change will not have
133			any visible effects for most users; it will only be of interest to those
134			who have written code which parses that format.)
135			</li>
136	siliconforks	415	</ul>
137	siliconforks	150
138			<p>
139			<a href="news.html">All news items...</a>
140			</p>
141	siliconforks	2	</div>
142			</div>
143			<div id="jscoverage-sidebar" class="yui-b">
144			<ul>
145			<li>Home
146			<li><a href="news.html">News</a> <a href="http://siliconforks.com/jscoverage/news.xml" type="application/rss+xml" title="RSS feed for JSCoverage"><img src="feed-icon-14x14.png" alt="RSS feed"></a>
147			<li><a href="manual.html">Documentation</a>
148			<li><a href="demo.html">Demo</a>
149	siliconforks	73	<li><a href="http://siliconforks.com/jscoverage/download.html">Download</a>
150	siliconforks	29	<li><a href="faq.html">FAQ</a>
151	siliconforks	2	<li><a href="help.html">Help</a>
152			<li><a href="license.html">License</a>
153			<li><a href="links.html">Links</a>
154	siliconforks	243	<li><a href="users.html">Users</a>
155	siliconforks	329	<li><a href="http://siliconforks.com/jscoverage/bugs/">Bug tracker</a>
156	siliconforks	2	</ul>
157			</div>
158			</div>
159			<div id="ft">
160			<address>
161	siliconforks	505	Copyright © 2007, 2008, 2009, 2010 <a href="http://siliconforks.com/"><img src="siliconforks-16x16.png" width="16" height="16" class="icon" alt="Silicon Forks"></a> <a href="http://siliconforks.com/">siliconforks.com</a><br>
162	siliconforks	2	<a href="mailto:jscoverage@siliconforks.com">jscoverage@siliconforks.com</a>
163			</address>
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