The function is to display structured two-dimensional data, such as score sheets, timetables, etc.; it is not used for page layout. The correct way to use it includes: 1. wrap the entire table with it; 2. define the table header; 3. contain the main content; 4. represent a row; 5. or define a cell. Auxiliary tags include:
The role of the <table> element in web development is <strong>to display structured two-dimensional data</strong> , that is, content arranged in the form of rows and columns. It is not used for page layout (that is CSS), but is specifically used to present data such as score sheets, price comparisons, and timetables that require ranks and queue relationships.<hr>
<h3> How to use <code><table> correctly?<ul>
<li> <strong>Suitable for using tables</strong> : When the data you want to express has a horizontal and vertical correspondence, such as a student's Chinese, mathematics, and English scores.</li>
<li> <strong>It is not recommended to use tables</strong> : If you just want to control page layout, such as having the picture on the left and the text on the right, you should use <code>div CSS layout.
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<table> : The container for the entire table<li> <code><thead> : The header part of the table, usually contains column names<li> <code><tbody> : Subject content<li> <code><tr> : One line<li> <code><th> or <code><td> : cell, where <code><th> is generally used for title cells<hr> <h3 id="What-are-the-auxiliary-labels-for-table-elements"> What are the auxiliary labels for table elements?</h3> <p> To improve accessibility and semantic clarity, HTML provides some tags for use with <code><table> :<ul> <li> <code><caption></caption>: Add a title to the table and display it above the table -
<colgroup></colgroup>and<col>: You can define the style or attributes of a column, such as setting the width of a column uniformly -
<tfoot> : Summary information at the bottom of the table, such as the "Total" line<p> These tags are not necessary, but reasonable use can make the table more structured and facilitate screen readers to understand the content.</p> <hr> <h3 id="Note-Don-t-make-the-form-too-complicated"> Note: Don't make the form too complicated</h3> <ul> <li> If the table has too many columns or is nested too many, it will reduce readability and the user will find it difficult to</li> <li> Problems with mobile display: Too many columns will cause the table to be compressed and even horizontal scrolling will occur, affecting the experience</li> <li> You can consider using responsive table frameworks (such as DataTables) to optimize the display effect under different devices.</li> </ul> <p> Basically that's it. The table itself is not complicated, but it is easy to maintain due to structural confusion or abuse in actual use, so just pay attention to clear semantics and hierarchies when writing.</p> </tfoot>
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