HTML 元素 - 有效 DOCTYPES
下面的表格列出了所有的 HTML5/HTML 4.01/XHTML 元素，以及它们会出现在什么文档类型 (!DOCTYPE) 中：
HTML 4.01 / XHTML 1.0
Tag HTML5 Transitional Strict Frameset XHTML 1.1 <a> Yes Yes Yes Yes Yes <abbr> Yes Yes Yes Yes Yes <acronym> No Yes Yes Yes Yes <address> Yes Yes Yes Yes Yes <applet> No Yes No Yes No <area> Yes Yes Yes Yes No <article> Yes No No No No <aside> Yes No No No No <audio> Yes No No No No <b> Yes Yes Yes Yes Yes <base> Yes Yes Yes Yes Yes <basefont> No Yes No Yes No <bdi> Yes No No No No <bdo> Yes Yes Yes Yes No <big> No Yes Yes Yes Yes <blockquote> Yes Yes Yes Yes Yes <body> Yes Yes Yes Yes Yes <br> Yes Yes Yes Yes Yes <button> Yes Yes Yes Yes Yes <canvas> Yes No No No No <caption> Yes Yes Yes Yes Yes <center> No Yes No Yes No <cite> Yes Yes Yes Yes Yes <code> Yes Yes Yes Yes Yes <col> Yes Yes Yes Yes No <colgroup> Yes Yes Yes Yes No <command> Yes No No No No <datalist> Yes No No No No <dd> Yes Yes Yes Yes Yes <del> Yes Yes Yes Yes No <details> Yes No No No No <dfn> Yes Yes Yes Yes Yes <dir> No Yes No Yes No <div> Yes Yes Yes Yes Yes <dl> Yes Yes Yes Yes Yes <dt> Yes Yes Yes Yes Yes <em> Yes Yes Yes Yes Yes <embed> Yes No No No No <fieldset> Yes Yes Yes Yes Yes <figcaption> Yes No No No No <figure> Yes No No No No <font> No Yes No Yes No <footer> Yes No No No No <form> Yes Yes Yes Yes Yes <frame> No No No Yes No <frameset> No No No Yes No <h1> to <h6> Yes Yes Yes Yes Yes <head> Yes Yes Yes Yes Yes <header> Yes No No No No <hgroup> Yes No No No No <hr> Yes Yes Yes Yes Yes <html> Yes Yes Yes Yes Yes <i> Yes Yes Yes Yes Yes <iframe> Yes Yes No Yes No <img> Yes Yes Yes Yes Yes <input> Yes Yes Yes Yes Yes <ins> Yes Yes Yes Yes No <kbd> Yes Yes Yes Yes Yes <keygen> Yes No No No No <label> Yes Yes Yes Yes Yes <legend> Yes Yes Yes Yes Yes <li> Yes Yes Yes Yes Yes <link> Yes Yes Yes Yes Yes <map> Yes Yes Yes Yes No <mark> Yes No No No No <menu> Yes Yes No Yes No <meta> Yes Yes Yes Yes Yes <meter> Yes No No No No <nav> Yes No No No No <noframes> No Yes No Yes No <noscript> Yes Yes Yes Yes Yes <object> Yes Yes Yes Yes Yes <ol> Yes Yes Yes Yes Yes <optgroup> Yes Yes Yes Yes Yes <option> Yes Yes Yes Yes Yes <output> Yes No No No No <p> Yes Yes Yes Yes Yes <param> Yes Yes Yes Yes Yes <pre> Yes Yes Yes Yes Yes <progress> Yes No No No No <q> Yes Yes Yes Yes Yes <rp> Yes No No No No <rt> Yes No No No No <ruby> Yes No No No No <s> Yes Yes No Yes No <samp> Yes Yes Yes Yes Yes <script> Yes Yes Yes Yes Yes <section> Yes No No No No <select> Yes Yes Yes Yes Yes <small> Yes Yes Yes Yes Yes <source> Yes No No No No <span> Yes Yes Yes Yes Yes <strike> No Yes No Yes No <strong> Yes Yes Yes Yes Yes <style> Yes Yes Yes Yes Yes <sub> Yes Yes Yes Yes Yes <summary> Yes No No No No <sup> Yes Yes Yes Yes Yes <table> Yes Yes Yes Yes Yes <tbody> Yes Yes Yes Yes No <td> Yes Yes Yes Yes Yes <textarea> Yes Yes Yes Yes Yes <tfoot> Yes Yes Yes Yes No <th> Yes Yes Yes Yes Yes <thead> Yes Yes Yes Yes No <time> Yes No No No No <title> Yes Yes Yes Yes Yes <tr> Yes Yes Yes Yes Yes <track> Yes No No No No <tt> No Yes Yes Yes Yes <u> No Yes No Yes No <ul> Yes Yes Yes Yes Yes <var> Yes Yes Yes Yes Yes <video> Yes No No No No <wbr> Yes No No No No
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