Tbody, THEAD, tfoot in HTML DOM table tags (objects) are automatically generated by a small experience

A <table> object,

1. When the inside is not written with <tbody> tags, but contains one or more <tr> tags (or <tr></tr> or <td> or <td></td> or <th > or <th></th>),

The <table> object will have a layer of <tbody></tbody> by default. (If the thead tag is not written in it, it will not be generated by default thead.tfoot).

2. When there is no <tbody> tag inside, a <tr> tag (or <tr></tr> or <td> or <td></td> or <th> or <) th></th>), but there are </tr> or </td>,

<table> objects do not generate a layer of <tbody></tbody> by default.

3. When there is no <tbody> tag, there is no <tr> or <td> or <th> when there are text, spaces, or full-width characters, or other non-<tr>/<td>/<th> tags ，

<table> objects do not generate a layer of <tbody></tbody> by default.

4.a: When there is no <tr> in the inside, but there is a <td> or <td></td>,<table> object will generate a layer in the <td> outside <TR></TR >. This <th> the same (that is, there are <td> or <th> and it generates <tr>).

B: When there is no <td> in it, but there are <tr> or <tr></tr>,<table> objects will generate a layer of <td></td> in <tr>. This <th> is not established (that is, when there is <tr>,<th> will not be generated by default).

The above, B points, even if the TR or TD label does not contain any characters, etc. are set up.

Simple Summary :

There are <tr> or <td> or <th> there will be <tbody> if none, there will be no <tbody>;

There are <td> or <th> there will be <tr>, there will be <tr> <td> but will not be generated by default <th>;

Single end tag </tr>, </td>, </th>, no default generated;

<thead> and <tfoot> will not be generated by default.

Tbody, THEAD, tfoot in HTML DOM table tags (objects) are automatically generated by a small experience