Question

How to change input text box background color?

Asked by: IT79637

How do I change the background color of an html input text box for normal display and for validation error display. Normal is white. Validation error is a shade of red (#990000).  I'm using PHP v5.2.5.

The data in the text boxes are Paths to files or the path to & name of program exectables.  An example of each follows:

File Path =  "J:\XYZFiles\".
Executable Path  =  "C:\Progra~1\myApplication\myProgramName.exe".



1. When  the page is empty or data is displayed, the background is the default (white).
2. When user clicks the "Update" button and there is a input error, the background color is red.

I know java script can do validation, but that is on the client.  However, testing the validity of a path needs to be done on the server because the path is on the server.

The only way I've thought of is below, buts that's a lot of ugly coding.  Maybe that is the nature of the beast!

Is there an easier/better way?

Thanks much.





 

<?php
if (($_POST["path1"]) == NULL) {
  ?> document.form.path1.background.color = #990000 <?php 
} else { 
?> document.form.path1.background.color = white <?php 
}
?>
 
Can this be done without having to exit php and use HTML/DOM?  Can it be done using CSS while executing PHP code on server?

                                  
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Asked On
2009-10-14 at 12:16:53ID24812538
Tags

php

,

html

,

javascript

Topics

PHP for Windows

,

Cascading Style Sheets (CSS)

Participating Experts
3
Points
300
Comments
5

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Answers

 

by: Ashok9Posted on 2009-10-14 at 12:45:56ID: 25574333

Yes this is the only solution. but still you can reduce the code like 

document.form.path1.background.color = <?= isset($_POST["path1"]) ? "white" : "#990000" ?> 
//this will be easily readable format.

                                              
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by: christophermccannPosted on 2009-10-14 at 13:21:39ID: 25574708

This really depends on your language but the below is a PHP example. The key is setting headers and then printing the file. The below will cause the file to download. If you wanted to display on the page i.e. load adobe reader into the browser then you would simply change attachment to inline.

- Christopher McCann

<?php 
//THE DOC ID IS PASSED IN AS A GET PARAMETER
$docID = mysql_real_escape_string($_GET['docID']); 
//WE GET THE DOC FROM THE DATABASE
$queryResult = mysql_query("SELECT doc, docName, docType FROM documents WHERE docID = '{$docID}' ", $connection); 
$documentRow = mysql_fetch_assoc($queryResult); 
//WE SET UP THE HEADERS
header("Content-type: " . $documentRow['docType']);
header("Content-Disposition: attachment; filename=" . $documentRow['docName']); 
//PRINT THE DOCUMENT OUT
print $documentRow['doc']; 
?>

                                              
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by: christophermccannPosted on 2009-10-14 at 13:42:39ID: 25574971

Somehow posted this to wrong question - Sorry!

 

by: pwsdotruPosted on 2009-10-14 at 15:34:20ID: 25575877

If you want make this check without reload page, then you should use AJAX for check folders.
else there is example

<?php
$color="white";
if ($_SERVER["REQUEST_METHOD"]=="POST" && $_POST["path1"]) == NULL) {
$color="#990000;
}
?>
<form method="post">
<input type="text" name="pathl" style="color:<?php echo($color); ?>" />
<input type="submit" value="GO" />
</form>
                                              
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by: IT79637Posted on 2009-10-15 at 08:30:00ID: 31641277

Works great for me.  Thanks!

20120131-EE-VQP-002

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