Javascript Validation On Multiple Select Lists

~~calthephenom~~ · 07-12-2009, 08:12 AM

i couldn't find any errors
try testing it out on www.htmledit.squarefree.com

~~calthephenom~~ · 07-12-2009, 08:14 AM

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script>
var minNum=1; var maxNum=3;
function checkListBoxSize(){
oSelect=document.getElementById("category_id");
var count=0;
for(var i=0;i<oSelect.options.length;i++){
if(oSelect.options[i].selected)
count++;
if(count>maxNum){
alert("Can't select more than 3");
return false;
}
}
if(count<1){
alert("Must select at least one item");
return false;
}
return true;
}

</script>
</head>

<body>
<form onsubmit="return checkListBoxSize()">
<select multiple="multiple" id="category_id" name="category_id" size="10" onchange="return false;">
<option value="a">a</option>
<option value="b">b</option>
<option value="c">c</option>
<option value="d">d</option>
<option value="e">e</option>
<option value="Other">Other</option>
</select>
<input name="" type="submit"/>
</form>
</body>
</html>

i got that for you

~~calthephenom~~ · 07-12-2009, 08:15 AM

what is it you are trying to make?

elf · 08-14-2009, 06:14 PM

It appears the OP was a bot of some sort, it has been dealt with. Thank you for trying to help though.

07-12-2009, 08:12 AM	#1 (permalink)
~~calthephenom~~ Troubled Join Date: May 2009 Posts: 71 OS: Computer = WXP, Server = linux w/ php 5	Re: Javascript Validation On Multiple Select Lists i couldn't find any errors try testing it out on www.htmledit.squarefree.com

07-12-2009, 08:14 AM	#2 (permalink)
~~calthephenom~~ Troubled Join Date: May 2009 Posts: 71 OS: Computer = WXP, Server = linux w/ php 5	Re: Javascript Validation On Multiple Select Lists <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> <script> var minNum=1; var maxNum=3; function checkListBoxSize(){ oSelect=document.getElementById("category_id"); var count=0; for(var i=0;i<oSelect.options.length;i++){ if(oSelect.options[i].selected) count++; if(count>maxNum){ alert("Can't select more than 3"); return false; } } if(count<1){ alert("Must select at least one item"); return false; } return true; } </script> </head> <body> <form onsubmit="return checkListBoxSize()"> <select multiple="multiple" id="category_id" name="category_id" size="10" onchange="return false;"> <option value="a">a</option> <option value="b">b</option> <option value="c">c</option> <option value="d">d</option> <option value="e">e</option> <option value="Other">Other</option> </select> <input name="" type="submit"/> </form> </body> </html> i got that for you

07-12-2009, 08:15 AM	#3 (permalink)
~~calthephenom~~ Troubled Join Date: May 2009 Posts: 71 OS: Computer = WXP, Server = linux w/ php 5	Re: Javascript Validation On Multiple Select Lists what is it you are trying to make?

08-14-2009, 06:14 PM	#4 (permalink)
elf Manager, Microsoft Support Join Date: Jul 2002 Location: Knoxville, TN or Austin, TX depending Posts: 7,038 OS: WinXP Pro SP3 and Windows 7 My System	Re: Javascript Validation On Multiple Select Lists It appears the OP was a bot of some sort, it has been dealt with. Thank you for trying to help though. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! I do not subscribe to threads, so if I stop replying, PM me with a link to your thread so I can find it again.