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Answer 1

+1 A:

this explanation came from this article on Yahoo Developer site. Section Avoid Empty Image src:

When an empty string is encountered as a URI, it is considered a relative URI and is resolved according to the algorithm defined in section 5.2. This specific example, an empty string, is listed in section 5.4.

Although it still not clear whether this behavior affect href or not (the article mainly concerned on empty src). But looks like it does:

Hopefully, browsers will not have this problem in the future. Unfortunately, there is no such clause for <script src=""> and <link href="">. Maybe there is still time to make that adjustment to ensure browsers don't accidentally implement this behavior.

note: I never encounter such behavior so it's just theoretical answer :)

bangbambang 2010-10-09 03:39:21

Answer 2

A:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
    <head>        
    </head>
    <body>
        <table width="100%" cellspacing="0" cellpadding="0" border="0" class="mainOutterTable">
            <tbody>
                <tr>
                    <td>
                        <table class="layoutColumn" cellpadding="0" cellspacing="0">
                            <tr>
                                <td style="width:100%;" valign="top">
                                    <table class="layoutRow" cellpadding="0" cellspacing="0">
                                        <tr>
                                            <td valign="top" width="910">
                                                <table class="layoutColumn" cellpadding="0" cellspacing="0">
                                                    <tr>
                                                        <td style="width:100%;" valign="top">
                                                            <table class="layoutRow" cellpadding="0" cellspacing="0">
                                                                <tr>
                                                                    <td valign="top" width="294">
                                                                        <table class="layoutColumn" cellpadding="0" cellspacing="0">
                                                                            <tr>
                                                                                <td style="width:100%;" valign="top">
                                                                                    <a name="7_N1K8HIC0GOO780I2B1KASD3047"></a>
                                                                                    <div class="wpsPortletBody">
                                                                                        This is a sample textf 3.
                                                                                        <link rel="stylesheet" type="text/css" title="Style" href=''/>
                                                                                    </div>
                                                                                </td>
                                                                            </tr>
                                                                        </table>
                                                                    </td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                    </tr>
                                                </table>
                                            </td>
                                        </tr>
                                    </table>
                                </td>
                            </tr>
                        </table>
                    </td>
                </tr>
            </tbody>
        </table>
    </body>
</html>

I was able to reproduce the problem on a test page. alt text

This is mentioned in Section 5.2 of http://www.apps.ietf.org/rfc/rfc3986.html#sec-5.2 If the Relative path is empty, then the target URI is the base path. if (R.path == "") then T.path = Base.path;

Jish 2010-10-11 16:22:17

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Strange behavior of HTML link tag

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