window.alert not work

[Techissue2008]

$query = "SELECT password FROM user ";
$results = mysql_query($query) ;
if (!mysql_num_rows($results) == 0)

while(list($password) = mysql_fetch_array($results))

1) echo "<script language='javascript'>window.alert('&#23494;&#30908;: '$password ')</script>";

or

2) <script language='javascript'>
window.alert('<?php echo $password; ?>');
</script>

Why both methods to alert a window are not ok?

[rsmith]

Does the alert window work if you don't use php in it? Meaning if you just did a simple:

<script language="javascript">
window.alert("Hello, world!");
</script>

Does that work?

[NogDog]

You may need to do something like this to filter problematic characters in the string being output:

window.alert('<?php
preg_replace('/[\r\n]+/', "\\\n", htmlspecialchars($password, ENT_QUOTES));
?>');

[Techissue2008]

Yes,

<script language="javascript">
window.alert("Hello, world!");
</script>

not work.

Also, htmlspecialchars($password, ENT_QUOTES not work

How should I debug it?

[NogDog]

Techissue2008 wrote:

...
How should I debug it?

Maybe run it in Firefox with the Firebug or Web Developer add-on, and then see what JavaScript errors are reported in the Error Console? In fact, the first thing to do might be to inspect the HTML source code in your browser and see if the <script> stuff is even being output at all.