Best way to validate forms? - GoFuckYourself.com

Jakez · 03-07-2010, 08:28 PM

Does anyone have any tricks/tips on validating forms (no plugins)?

There doesn't really seem to be any universal way to make a javascript function that will suit everything, you almost have to hard code form/input names into the function, which is nasty if you're going to be working with a lot of forms in a project.

I mean I could make something that checks for empty fields or validates an email address but what if I need to see if a <select> listbox value=="this" and if it does then make sure this <input> field=="this".. things would get really messy..

Jakez · 03-07-2010, 08:39 PM

Plus you have to worry about people doing malicious things and getting past your javascript validation so you have to also pass everything through PHP or something.

candyflip · 03-07-2010, 08:43 PM

Tried jquery?

http://www.webreference.com/programm...rm_validation/

fris · 03-07-2010, 08:46 PM

jquery has some nice ones

fatfoo · 03-07-2010, 08:50 PM

jquery - I guess that's it.

Jakez · 03-07-2010, 09:19 PM

Of course... I'm becoming very familiar with jquery now lol. Still kind of have the same problem though, I guess there will just have to be another function for every form? Gross..

fris · 03-08-2010, 05:58 AM

Quote:

Originally Posted by Jakez

Of course... I'm becoming very familiar with jquery now lol. Still kind of have the same problem though, I guess there will just have to be another function for every form? Gross..

not at all

Jakez · 03-08-2010, 06:19 PM

Ok I have like 20 jquery.com pages open trying to figure out how to do this but none of them work, lets say I have a few of these:

Quote:

<select id=stuff[0] name=stuff[0]>
<option value="thing">Thing</option>
<option value="other_thing">Other Thing</option>
</select>

<select id=stuff[1] name=stuff[1]>
<option value="thing">Thing</option>
<option value="other_thing">Other Thing</option>
</select>

Ok, I need to go through the stuff[] array and find out if ANY of them have "thing" selected. Major confusion.

I think the closest I've came is:

Quote:

var wtf=$('#stuff[0]').val();

No luck. Tried the inArray()'s and indexOf()'s and they don't seem to return anything either.

Jakez · 03-08-2010, 06:42 PM

I can get the value of a <select> just fine, but since I have many of them stored into an array it's made this a lot more difficult.

Jakez · 03-08-2010, 09:22 PM

LOL I think I finally stumped everyone. I did find a solution though:

Quote:

var selects = $("select[name^=stuff]");
var wtf = $.inArray("thing",selects.map(function() { return $(this).val(); }).get()) > -1;

Returns true or false.

03-07-2010, 08:28 PM	#1
Jakez Confirmed User Industry Role: Join Date: Jan 2004 Location: oddfuturewolfgangkillthemall!!!!!!! Posts: 5,656	Best way to validate forms? Does anyone have any tricks/tips on validating forms (no plugins)? There doesn't really seem to be any universal way to make a javascript function that will suit everything, you almost have to hard code form/input names into the function, which is nasty if you're going to be working with a lot of forms in a project. I mean I could make something that checks for empty fields or validates an email address but what if I need to see if a <select> listbox value=="this" and if it does then make sure this <input> field=="this".. things would get really messy.. __________________ [email protected] - jakezdumb - 573689400 Killuminati

03-07-2010, 08:39 PM	#2
Jakez Confirmed User Industry Role: Join Date: Jan 2004 Location: oddfuturewolfgangkillthemall!!!!!!! Posts: 5,656	Plus you have to worry about people doing malicious things and getting past your javascript validation so you have to also pass everything through PHP or something. __________________ [email protected] - jakezdumb - 573689400 Killuminati

03-07-2010, 08:43 PM	#3
candyflip Carpe Visio Industry Role: Join Date: Jul 2002 Location: New York Posts: 43,061	Tried jquery? http://www.webreference.com/programm...rm_validation/ __________________ Spend you some brain. Email Me

03-07-2010, 08:46 PM	#4
fris Too lazy to set a custom title Industry Role: Join Date: Aug 2002 Posts: 55,372	jquery has some nice ones __________________ Since 1999: 69 Adult Industry awards for Best Hosting Company and professional excellence. WP Stuff

03-07-2010, 08:50 PM	#5
fatfoo ICQ:649699063 Industry Role: Join Date: Mar 2003 Posts: 27,763	jquery - I guess that's it. __________________ Send me an email: [email protected]

03-07-2010, 09:19 PM	#6
Jakez Confirmed User Industry Role: Join Date: Jan 2004 Location: oddfuturewolfgangkillthemall!!!!!!! Posts: 5,656	Of course... I'm becoming very familiar with jquery now lol. Still kind of have the same problem though, I guess there will just have to be another function for every form? Gross.. __________________ [email protected] - jakezdumb - 573689400 Killuminati Last edited by Jakez; 03-07-2010 at 09:25 PM..

03-08-2010, 06:42 PM	#9
Jakez Confirmed User Industry Role: Join Date: Jan 2004 Location: oddfuturewolfgangkillthemall!!!!!!! Posts: 5,656	I can get the value of a <select> just fine, but since I have many of them stored into an array it's made this a lot more difficult. __________________ [email protected] - jakezdumb - 573689400 Killuminati