HTML表格中的`iframe`

问题描述：

I am displaying some data from a database into my cms, using tables (tr, td).

   <tr align="center">
        <td><?php echo $i++; ?></td>
        <td><?php echo $post_image; ?></td>
        <td><?php echo $post_title; ?></td>
        <td>
            <iframe width="100px" frameborder="0" id='inneriframe' scrolling=yes >
                <?php echo $post_description; ?>
            </iframe>
        </td>
        <td><a href="index.php?edit_football_news=<?php echo $post_id; ?>">Edit</a></td>
        <td><a href="includes/delete_football_news.php?delete_football_news=<?php echo $post_id; ?>">Delete</a></td>
    </tr>

Unfortunately the description php variable is not displayed at all inside my iframe. However, if I take out the iframe tag, everything works fine, and I can see all the stored values from the database.

<tr align="center">
        <td><?php echo $i++; ?></td>
        <td><?php echo $post_image; ?></td>
        <td><?php echo $post_title; ?></td>
        <td><?php echo $post_description; ?></td>

        <td><a href="index.php?edit_football_news=<?php echo $post_id; ?>">Edit</a></td>
        <td><a href="includes/delete_football_news.php?delete_football_news=<?php echo $post_id; ?>">Delete</a></td>
    </tr>

So my main question is how to use iframes inside tds?

我使用表格（tr code>，将数据库中的一些数据显示到我的cms中， TD 代码>）。 p>

 ＆lt; tr align =“center”＆gt; 
＆lt; td＆gt;＆lt;？php echo $ i ++;  ？＆gt;＆lt; / td＆gt; 
＆lt; td＆gt;＆lt;？php echo $ post_image;  ？＆gt;＆lt; / td＆gt; 
＆lt; td＆gt;＆lt;？php echo $ post_title;  ？＆gt;＆lt; / td＆gt; 
＆lt; td＆gt; 
＆lt; iframe width =“100px”frameborder =“0”id ='inneriframe'scrolling = yes＆gt; 
＆lt;？php echo $ post_description;  ？＆gt; 
＆lt; / iframe＆gt; 
＆lt; / td＆gt; 
＆lt; td＆gt;＆lt; a href =“index.php？edit_football_news =＆lt;？php echo $ post_id;？＆gt;”＆gt;编辑＆lt;  ; / a＆gt;＆lt; / td＆gt; 
＆lt; td＆gt;＆lt; a href =“includes / delete_football_news.php？delete_football_news =＆lt;？php echo $ post_id;？＆gt;”＆gt;删除＆lt; / a＆gt;＆lt;  / td＆gt; 
＆lt; / tr＆gt; 
  code>  pre> 
 
 不幸的是，我的 iframe  code>中并没有显示描述php变量。 但是，如果我取出 iframe  code>标记，一切正常，我可以看到数据库中存储的所有值。   p> 
 
 
 ＆lt; tr align =“center”＆gt; 
＆lt; td＆gt;＆lt;？php echo $ i ++;  ？＆gt;＆lt; / td＆gt; 
＆lt; td＆gt;＆lt;？php echo $ post_image;  ？＆gt;＆lt; / td＆gt; 
＆lt; td＆gt;＆lt;？php echo $ post_title;  ？＆gt;＆lt; / td＆gt; 
＆lt; td＆gt;＆lt;？php echo $ post_description;  ？＆gt;＆lt; / td＆gt; 
 
＆lt; td＆gt;＆lt; a href =“index.php？edit_football_news =＆lt;？php echo $ post_id;？＆gt;”＆gt;编辑＆lt; / a＆gt;＆lt; /  td＆gt; 
＆lt; td＆gt;＆lt; a href =“includes / delete_football_news.php？delete_football_news =＆lt;？php echo $ post_id;？＆gt;”＆gt;删除＆lt; / a＆gt;＆lt; / td＆gt; 
＆lt;  / tr＆gt; 
  code>  pre> 
 
 所以我的主要问题是如何在 td  code> s中使用iframe？ p> 
  div>

答

iframe elements load external documents; the HTML that goes between their start and end tags is alternative content for browsers which do not support iframes.

If you want a scrolling area on a page, apply the CSS overflow property to an appropriate element (probably a div in this case).

答

As I mentioned in comments (but gotten no response from).

iframe requires a source src="file.xxx".
https://developer.mozilla.org/en/docs/Web/HTML/Element/iframe

Taken from example #1:

<iframe src="page.html" width="400" height="300">
   <p>Your browser does not support iframes.</p>
</iframe>

What you need to do is to remove the <?php echo $post_description; ?> from the iframe and just do:

<iframe src="file_for_iframe.php" width="100px" frameborder="0" id='inneriframe' scrolling=yes >

</iframe>

and have the variables inside file_for_iframe.php to be echo'd in there.

That's how you'll get your iframe to show the contents "on screen" rather than in HTML source.

If you had a look at your HTML source as I also mentioned in comments, you would indeed have seen the contents.

They're in there alright, but not being echo'd properly (on screen).

The (and as an example) file_for_iframe.php file that I have stated above, will contain whatever content you wish to display.

For example:

<?php 

echo $post_description = "Whatever is presently assigned to this...";

?>

Important note:

echo $post_description = "x"; is valid syntax and you need to keep the echo for it. Otherwise, it won't work.

HTML表格中的`iframe`

相关推荐