table in th and TD label usage

<table width= "border=" 1 "cellspacing=" 0 ">     <tr>         <th> class </th>         <th> date </th>         <th> title </th>     </tr>     <tr> <td>         class </td>         <TD >2012-5-10</td>         <td> title 1</td>     </tr>     <tr>         <td> Second Class </td >         <td>2012-5-20</td>         <td> title 2</td>     

<th>, like <td>, is also nested in the <tr>,<tr> in <table>

<table>...</table> to define a table start and end

<th>...</th> defines the header cells. The text in the table will be shown in bold (<TH> and <TD> are also marked with a cell, the only difference being that the text in the indicated cell is shown in bold, so you can see:
<th> text </th>=<td><b> text </b></td>
），
You can also use this label in the table,<th> label must be placed in the <tr> tag

<tr>...</tr> defines a row of labels that can be set up in groups of cells defined by <td> or <th> tags within a set of row labels

<td>...</td> Define cell labels, a set of <td> tags will create a cell,<td> label must be placed in the <tr> tag

table in th and TD label usage