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This article is about the usefulness of the source attribute src and the replacement text attribute alt in HTML. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

HTML form

Tables are defined by tags. Each table has several rows (defined by tags), and each row is divided into cells (defined by tags). The letter td refers to tabular data (table data), that is, the contents of data cells. Data cells can contain text, pictures, lists, paragraphs, forms, horizontal lines, tables, and so on.

Example

Row 1, cell 1row 1, cell 2row 2, cell 1row 2, cell 2

Table and Border Properties

If you do not define border properties, the table does not display borders. Sometimes this is useful, but most of the time, we want to display the border.

Use the border properties to display a table with borders:

Example

Row 1, cell 1Row 1, cell 2

The header of the form

The header of the table is defined with a label.

Most browsers display the header as text centered in bold:

Example 1, header

Heading1Heading2row 2, cell 1row 2, cell 2row 3, cell 1row 3, cell 2

Example 2, vertical header

Heading1row 1, cell 2row 1, cell 3Heading2row 2, cell 2row 2, cell 3

Empty cells in a table

Table cells without content do not display very well in some browsers.

If a cell is empty (with no content), the browser may not be able to display the border of the cell.

To avoid this, add a space placeholder () to the empty cell to display the border.

Example

Row 1, cell 1row 1, cell 2 row 2, cell 2

Form label and description

Define the table

Define the table title

Defines the header of the table

Define the rows of the table

Define table cells

Defines the header of the table

Defines the body of the table

Defines the footer of the table

Defines the properties used for table columns

Defines the group of table columns

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