javascript意外令牌

Question

I'm trying to execute deleteObj function:

<td class="tdDesign">
  <a onClick="javascript:deleteObj(<?php echo $row['id'] ?>)">
    <img src="images/deleteSmaller.PNG">
  </a>
</td>

but i'm getting this error: Uncaught SyntaxError: Unexpected token <

What is wrong?

edit: $row['id'] is a parameter from database

Answer 1

First

Make sure <?php is interpreted, as the < in the error message might actually refer to that. Also make sure you are not already using PHP to output the HTML code you mentioned in your example. If this is the case, you do not need another <?php ?> tag, but instead you have to make sure that $row['id'] is treated as variable:

echo '<tag attribute="javascript:do(' . $row['id'] . ');">';

Second

Check whether the contents of $row['id'] express valid javascript. Perhaps you want to output a string? Make sure that your result from $row['id'] is contained in quotes (if it is not a valid expression, such as an integer or a regular expression).

Answer 2

Because PHP is actually running! Javascript is seeing <?php echo $row['id'] ?> when you meant it to see the content of row[id].

It might be caused by misconfiguration of the server, or something about the quotation marks that I don't understand.

Answer 3

You need to escape the < and > characters in an html/xml attribute using < and > entities like following:

<a onClick="javascript:deleteObj(&lt;?php echo $row['id'] ?`&gt;)">