Monday, December 11, 2023
 Popular · Latest · Hot · Upcoming
rated 0 times [  158] [ 7]  / answers: 1 / hits: 37029  / 15 Years ago, mon, february 23, 2009, 12:00:00

Does anyone know how to reset the border color of an input control once you have modified it using javascript? Useful for validation by highlighting fields that have incorrect or invalid data in them etc.

E.g. changing the border:

document.getElementById('myinput').style.border = '1px solid red';

how to reset? the next line just removes the border completely...

document.getElementById('myinput').style.border = '';

if I reset the border color back to a particular color (e.g. black or grey etc), it may look strange in some browsers/operating systems that sort of 'theme' the controls...

thanks heaps!

More From » html


Don't do it with setting style attributes. Do it by using CSS classes. I would also recommend using a Javascript library to handle this. It just makes the code cleaner.

Removing CSS attributes is problematic because you don't always know what they should be set back to. Adding and removing classes just... works.

You can have multiple classes per element so there's really no argument against doing it this way (imho).

I'm used to jQuery so my example is with that.

Wrong way:

$(#myinput).css(border, 1px solid red);

Right way:

<style type=text/css>
.redborder { border: 1px solid red; }

<script type=text/javascript>

[#99942] Tuesday, February 17, 2009, 15 Years  [reply] [flag answer]
Only authorized users can answer the question. Please sign in first, or register a free account.

Total Points: 55
Total Questions: 101
Total Answers: 109

Location: Sudan
Member since Tue, Aug 3, 2021
2 Years ago
alvin questions