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Child Elements

The Child Elements of Other Elements
Code Sample:
<applet code="output.class" width="50" height="50">
<PARAM name="parm1" value="applet">
no Java applet support;
</applet><br>
<object data="data.shape">
<PARAM name="parm2" value="object">
no support object
</object>
<ol>
<li>one</li>
<li>two</li>
</ol>
<ul>
<li>first</li>
<li>second</li>
</ul>
<dir>
<li>firstdir</li>
<li>seconddir</li>
</dir>
<menu>
<li>firstmenu</li>
<li>secondmenu</li>
</menu>
<dl>
<dt>one</dt>
<dd>the first one</dd>
<dt>two</dt>
<dd>the second one</dd>
</dl>
<table border="1" width="150" >
<caption>table caption</caption>
<colgroup span="2" align=center>
<col align=right>
<thead>
<tr>
 <th>name</th>
 <th>qty</th>
 <th>cost</th>
</tr>
</thead>
<tfoot>
<tr>
 <td>total</td>
 <td>3</td>
 <td>5</td>
</tr>
</tfoot>
<tbody>
<tr>
 <td>A</td>
 <td>1</td>
 <td>2</td>
</tr>
<tr>
 <td>B</td>
 <td>2</td>
 <td>3</td>
</tr>
</tbody>
</table>
<fieldset><legend>grouped fields</legend>
item:<input type="text"><br>
Desc:<input type="text"><br></fieldset>
<img src="http://sideway.hk/images/sideway.jpg"
alt="sideway" usemap="#navmap"><br>
<map name="navmap"><area shape="rect" coords="0,0,102,43"
href="http://sideway.hk"></map><br>
option seletion: <select name="D1">
<optgroup label="english">
 <option value="option">Option A</option>
 <option value="option">Option B</option>
</optgroup>
<option value="option">Option 1</option>
</select><br>
<!-- comment --><br>
<param> open tag: <param> end tag: ---
The <param> element is used to define the required parameters or variables for an <object> or <applet> element. The required <param> elements should be enclosed by the related <object> or <applet> element and be placed at the beginning of the element text contents.
child elements: ---
attributes: id name value valuetype type
events: ---
<li> open tag: <li> end tag: </li>
The <li> element is used to define a list item for an <ol>, <ul>, <dir> or <menu> element. All <li> elements should be enclosed by the related <ol>, <ul>, <dir> or <menu> element.
child elements: ( ( ( <p> | ( <h1> | <h2> | <h3> | <h4> | <h5> | <h6> ) | ( <ul> | <ol> | <dir> | <menu> ) | ( <pre> ) | <dl> | <div> | <center> | <noscript> | <noframes> | <blockquote> | <form> | <isindex> | <hr> | <table> | <fieldset> | <address> ) | ( ( #PCDATA ) | ( <tt> | <i> | <b> | <u> | <s> | <strike> | <big> | <small> ) | ( <em> | <strong> | <dfn> | <code> | <samp> | <kbd> | <var> | <cite> | <abbr> | <acronym> ) | ( <a> | <img> | <applet> | <object> | <font> | <basefont> | <br> | <script> | <map> | <q> | <sub> | <sup> | <span> | <bdo> | <iframe> ) | ( <input> | <select> | <textarea> | <label> | <button> ) ) ) )*
attributes: id class style title lang dir type value
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<dt> open tag: <dt> end tag: </dt>
The <dt> element is used to define a term for an <dl> element in the HTML document. All <dt> elements should be enclosed by the related <dl> element. In general, the <dt> element should start before the <dd> element in the definition list.
child elements: ( ( #PCDATA ) | ( <tt> | <i> | <b> | <u> | <s> | <strike> | <big> | <small> ) | ( <em> | <strong> | <dfn> | <code> | <samp> | <kbd> | <var> | <cite> | <abbr> | <acronym> ) | ( <a> | <img> | <applet> | <object> | <font> | <basefont> | <br> | <script> | <map> | <q> | <sub> | <sup> | <span> | <bdo> | <iframe> ) | ( <input> | <select> | <textarea> | <label> | <button> ) )*
attributes: id class style title lang dir
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<dd> open tag: <dd> end tag: </dd>
The <dd> element is used to define a description of an term for an <dl> element in the HTML document. All <dd> elements should be enclosed by the related <dl> element. In general, the <dd> element should start after the <dt> element in the definition list.
child elements: ( ( ( <p> | ( <h1> | <h2> | <h3> | <h4> | <h5> | <h6> ) | ( <ul> | <ol> | <dir> | <menu> ) | ( <pre> ) | <dl> | <div> | <center> | <noscript> | <noframes> | <blockquote> | <form> | <isindex> | <hr> | <table> | <fieldset> | <address> ) | ( ( #PCDATA ) | ( <tt> | <i> | <b> | <u> | <s> | <strike> | <big> | <small> ) | ( <em> | <strong> | <dfn> | <code> | <samp> | <kbd> | <var> | <cite> | <abbr> | <acronym> ) | ( <a> | <img> | <applet> | <object> | <font> | <basefont> | <br> | <script> | <map> | <q> | <sub> | <sup> | <span> | <bdo> | <iframe> ) | ( <input> | <select> | <textarea> | <label> | <button> ) ) ) )*
attributes: id class style title lang dir
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<caption> open tag: <caption> end tag: </caption>
The <caption> element is used to define a table caption for an <table> element in the HTML document. The <caption> element should be enclosed by the related <table> element and zero or only one <caption> element is allowed for one <table> element. Besides, the <caption> element should be placed after the <table> start tag before rending of any element content.
child elements: ( ( #PCDATA ) | ( <tt> | <i> | <b> | <u> | <s> | <strike> | <big> | <small> ) | ( <em> | <strong> | <dfn> | <code> | <samp> | <kbd> | <var> | <cite> | <abbr> | <acronym> ) | ( <a> | <img> | <applet> | <object> | <font> | <basefont> | <br> | <script> | <map> | <q> | <sub> | <sup> | <span> | <bdo> | <iframe> ) | ( <input> | <select> | <textarea> | <label> | <button> ) )*
attributes: id class style title lang dir align
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<colgroup> open tag: <colgroup> end tag: </colgroup>
The <colgroup> element is used to define a group of column formats in a table. The <colgroup> element should be enclosed by the related <table> element and the <colgroup> element should be placed after the <caption> element before rending of other element content except the <col> element.
child elements: ( <col> )*
attributes: id class style title lang dir span width align char charoff valign
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<col> open tag: <col> end tag: ---
The <col> element is used to define a column format of column(s} in a table. The <col> element should be enclosed by the related <table> element. It can be used as the child element of <colgroup> element or used as the child element of <table> element. Similarly the <col> element should also be placed after the <caption> element before rending of any element content except the <colgroup> element.
child elements: ---
attributes: id class style title lang dir span width align char charoff valign
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<thead> open tag: <thead> end tag: </thead>
The <thead> element is used to define the header section of a table to group all header content row cells of a table. The <thead> element should be enclosed by the related <table> element and zero or only one <thead> element is allowed for a <table> element and it should be placed after all <col> and <colgroup> element.
<tfoot> open tag: <tfoot> end tag: </tfoot>
The <tfoot> element is used to define the footer section of a table to group all footer content row cells of a table. The <tfoot> element should be enclosed by the related <table> element and zero or only one <tfoot> element is allowed for a <table> element and it should be placed after the <thead> element  before rending of any element content.
child elements: ( <tr> )+
attributes: id class style title lang dir align char charoff valign
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<tbody> open tag: <tbody> end tag: </tbody>
The <tbody> element is used to define a body section to group the continuous body content rows with same attributes in a table. The <tbody> element should be enclosed by the related <table> element and one or more <tbody> element are allowed for a <table> element and it should be placed after the <tfoot> element before rending of any element content. The <tbody> element tag is required when there is the present of <thead> element and <tfoot> element.
child elements: ( <tr> )+
attributes: id class style title lang dir align char charoff valign
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<tr> open tag: <tr> end tag: </tr>
The <tr> element is used to define a row section of a table by grouping the corresponding table cells together.
child elements: ( <th> | <td> )+
attributes: id class style title lang dir span width align char charoff valign bgcolor
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<th> open tag: <th> end tag: </th>
The <th> element is used to define a section as a header cell of a table for containing header information.
<td> open tag: <td> end tag: </td>
The <td> element is used to define a section as a data cell of a table for containing individual table cell data.
child elements: ( ( ( <p> | ( <h1> | <h2> | <h3> | <h4> | <h5> | <h6> ) | ( <ul> | <ol> | <dir> | <menu> ) | ( <pre> ) | <dl> | <div> | <center> | <noscript> | <noframes> | <blockquote> | <form> | <isindex> | <hr> | <table> | <fieldset> | <address> ) | ( ( #PCDATA ) | ( <tt> | <i> | <b> | <u> | <s> | <strike> | <big> | <small> ) | ( <em> | <strong> | <dfn> | <code> | <samp> | <kbd> | <var> | <cite> | <abbr> | <acronym> ) | ( <a> | <img> | <applet> | <object> | <font> | <basefont> | <br> | <script> | <map> | <q> | <sub> | <sup> | <span> | <bdo> | <iframe> ) | ( <input> | <select> | <textarea> | <label> | <button> ) ) ) )*
attributes: id class style title lang dir abbr axis headers scope rowspan colspan align char charoff valign nowarp bgcolor width height
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<legend> open tag: <legend> end tag: </legend>
The <legend> element is used to define the enclosed text content as the caption of a <fieldset> element.
child elements: ( ( #PCDATA ) | ( <tt> | <i> | <b> | <u> | <s> | <strike> | <big> | <small> ) | ( <em> | <strong> | <dfn> | <code> | <samp> | <kbd> | <var> | <cite> | <abbr> | <acronym> ) | ( <a> | <img> | <applet> | <object> | <font> | <basefont> | <br> | <script> | <map> | <q> | <sub> | <sup> | <span> | <bdo> | <iframe> ) | ( <input> | <select> | <textarea> | <label> | <button> ) )*
attributes: id class style title lang dir accesskey align
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<area> open tag: <area> end tag: ---
The <area> element is used to define a clickable area section inside a image area map defined by a <map> element.
child elements: ---
attributes: id class style title lang dir shape coords href target nohref alt tablindex accesskey
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup onfocus onblur
<optgroup> open tag: <optgroup> end tag: </optgroup>
The <optgroup> element is used to define a section to group related choices of a selection list for a <select> element together.
child elements: ( <option> )+
attributes: id class style title lang dir disable label
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<option> open tag: <option> end tag: </option>
The <option> element is used to define a choice or option of a selection list for a <select> element.
child elements: ( #PCDATA )
attributes: id class style title lang dir selected disabled label value
events: onclick ondbclick onmousedown onmouseup onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup
<!--...--> open tag: <!-- end tag: -->
The <!--...--> element is used to define a document commenting division which is not for content rendering in the HTML document 
child elements: ( plain text ) -( "--" )
attributes: ---
events: ---
required Optional tag Deprecated Transitional Frameset Exclusion
Optional Element or Content Occurrence Character:
(+) one or more;  (*) zero or more;  (?) zero or one times;  ( ) exactly once 
Choice or Sequence Element or Content :
(|) or  (&) and  (,) sequence  (+) include  (-) exclude

©sideway

ID: 100800035 Last Updated: 3/8/2011 Revision: 2 Ref:

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References

  1. http://www.w3.org/TR/1999/REC-html401-1999, 1999, HTML 4.01 Specification: W3C Recommendation, updated 24 December 1999
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