php wont work in external js file???

darksniperx · #1 (**permalink**) 10-20-07, 09:36 PM

Code:

document.getElementById("pub_year_id").value = '<?php print date('Y'); ?>';

when the code is inside an html it works. when the code is placed in external js file, it wont work, it just prints <?php print date('Y'); ?> instead of the value it suppose to generate.

why???

job0107 · #2 (**permalink**) 10-20-07, 11:18 PM

Quote:

Originally Posted by darksniperx

Code:

document.getElementById("pub_year_id").value = '<?php print date('Y'); ?>';

when the code is inside an html it works. when the code is placed in external js file, it wont work, it just prints <?php print date('Y'); ?> instead of the value it suppose to generate.

why???

It does that because an input field converts everything to text.
If you want to get it to output the current year you will have to
use Javascript instead of PHP.

A simple example:

HTML Code:

<input name="pub_year_id" id="pub_year_id">
<script src='date.js'></script>

And the contents of date.js:

date.js

Javascript Code:

var d = new Date();
var y = d.getYear();
document.getElementById("pub_year_id").value = y;

There are other options to using Javascript.
You could have a variable set to the current year using PHP
in an external file and then include() the file in your page.

Like this:

External date.php file:

date.php

PHP Code:


			
$date = date(Y);

Your page:

PHP Code:


			
<?php
include "date.php";
?>
<input name="pub_year_id" value="<?php echo $date ?>">

-Or-

<?php
include "date.php";
echo '<input name="pub_year_id" value="'.$date.'">';
?>

darksniperx · #3 (**permalink**) 10-20-07, 11:25 PM

Quote:

<?php
include "date.php";
?>
<input name="pub_year_id" value="<?php echo $date ?>">

that would not be the problem if I needed to set the date once and thats it, also I am not only using date php function, I have alot of other functions that do interactions between php and js, and they just started to get too big so I put them into a separate js file.

job0107 · #4 (**permalink**) 10-20-07, 11:43 PM

If you want to use the js in a function then you could do it like this:

date.js

Javascript Code:

function get_year(id)
{
 var d = new Date();
 var y = d.getYear();
 document.getElementById(id).value = y;
 }

Your page:

HTML Code:

<html>
<head>
<script src='date.js'></script>
</head>
<body>
<input name="pub_year_id" id="pub_year_id">
<input name="current_year" id="current_year">
<script>
get_year("pub_year_id");
get_year("current_year");
</script>
</body>
</html>