Massachusetts Department of Elementary and Secondary Education
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XHTML Checklist

General

  • The document validates as XHTML 1.0 Transitional.
  • The Document weight is not greater than 32 KiloBites (KB).
    (You can view the document weight under the Tools menu. )
  • All tags are written in lowercase. Ex. <h1>, not <H1>.
  • All Attributes are written in lowercase and attribute values are written in lower case. Ex. <p class="bold">
  • All tags must be closed, including empty elements, (start tag must end with />).
  • Filenames are in lowercase and do not contain spaces.
  • Code is cascaded for easy viewing

Headings and Titles

  • Every page has an <h1> and an <h2>.
  • Headings and Table Headings are in Title Case.
  • Each page has a title, <title></title>. In most cases, the title is the same as the <h1>.
  • An appropriate Heading tag has been inserted for each new section of the file.

Tables

  • All Table tags <table> have cellpadding ( = 4), and cellspacing ( =0 ) attributes.
  • In a single table, every table row <tr> has the same number of Table Data's <td>.

Special Characters - use numeric values

  • All quotes ( " and &quot; ) are replaced with &#34;
  • All ampersands ( & and &amp; ) are replaced with &#38;
  • All dollar signs ( $ ) are replaced with &#36;
  • All percent signs ( % ) are replaced with &#37;
  • All number signs ( # ) are replaced with &#35;
  • All non-breaking spaces ( &nbsp; ) are replaced with &#160;
  • All section symbols ( § and &#38;sect; ) are replaced with &#167;

    more special characters

Deprecated Tags and Attributes

  • Do not use these deprecated tags and attributes
  • In particular look for the tags <B> <I> <STRONG> <EM> <CENTER> and <FONT>
  • And the attributes BGCOLOR, ALIGN, VALIGN and NOWRAP


Last Updated: November 3, 2009
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