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 Message Boards » » limit the number of checkboxes a user can select? Page [1]  
drtaylor
All American
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so here's the thing - google maps crashes browsers on slower machines when you try and map too many locations at once. we're allowing users to select real estate listings to map by providing a checkbox beside each of the listings that show up through their search. they can display up to 99 listings on a page and i just know somebody is going to sit there and click all of them (because i haven't let them have a "map all" function).

is there any way for me to have all the checkboxes become inactive after the user selects, say, 20 items?

8/26/2005 1:42:12 PM

OmarBadu
zidik
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a better solution would be to allow them to check as many as they want and then only show them 20 - with a next button for the others

8/26/2005 1:43:25 PM

drtaylor
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that's not a bad strategy - any other alternative ideas

8/26/2005 1:44:56 PM

darkone
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Just let it crash and laugh at them. Just put a little disclaimer by the submit button.

8/26/2005 1:49:59 PM

ZeroDegrez
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Yes, you 'can' disable them but, javascript is a bitch when dealing with various browsers.

Why are we giving ideas to google?

Just run a counter, when the clicked event happens ++ it, when it hits 20, prevent the checkmark from happening. I believe you can do that by just returning false from the clicked event. I may be wrong. When they click a clicked one, -- the counter, and you're good to go. And show them in a lable the number of items they have left they can check.

8/26/2005 2:19:53 PM

Shaggy
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Quote :
"Yes, you 'can' disable them but, javascript is a bitch when dealing with various browsers."


just make sure it works in IE. Anything else doesn't really matter.

8/26/2005 2:25:47 PM

ZeroDegrez
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uh...Firefox?

8/26/2005 2:28:15 PM

Shaggy
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Quote :
" doesn't really matter."

8/26/2005 2:29:32 PM

Incognegro
Suspended
4172 Posts
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to do it properly you should probably use JavaScript if it's detected as enabled, and dirty, slow postback if not (probably mentioning in a big red warning box that it's using postback because they have javascript disabled)

8/26/2005 2:31:28 PM

Stein
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If they're using Google Maps, they're going to have to have JavaScript on anyway.

8/26/2005 2:50:53 PM

drtaylor
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1969 Posts
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Quote :
"uh...Firefox?"


well we all use it, but only 1% of the visitors to our site do

Quote :
"If they're using Google Maps, they're going to have to have JavaScript on anyway."


yeah they do, matter of fact it's all the java that winds up crashing it

thanks for the input guys. right now i'm thinking that the "let them crash it" is the right approach to take

8/26/2005 7:39:47 PM

 Message Boards » Tech Talk » limit the number of checkboxes a user can select? Page [1]  
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