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Question

Status: Open Points: 125 Time: 00:04 - May 29, 2007

mdjinna

How can i validate checkboxlist in javascript?

validate the checkboxlist in the java script

Categories:

JavaScript

Answer Discussion

Tutorials

nidhi

Date:: Jan 29, 2009

Time:: 09:16

What do you mean by checkboxlist ? Unless that is something new, I am not sure of what that is. You either have one or more checkboxes, any of which can be selected or if you want just one choice then its a radio button choice

nidhi

Date:: Jan 29, 2009

Time:: 09:32

Simple radio button validation. Form which asks you to select a fruit. Note, the form submit specifies to call a javascript function. In that I iterate thru the radio buttons, make sure the buttons have the same name

In checkFruitEntered code, I set a variable to be -1. If a fruit is selected then I set it to that index. see the final if in that method.

<html>
<head><title>radio btn validation</title></head>

<script language="JavaScript">
function checkFruitEntered() {

var fruitSelected = -1;

for (i = 0; i < quomonTest.rbtn.length; i++) {
  if (quomonTest.rbtn[i].checked) {
   fruitSelected = i;
  }
}

if (fruitSelected == -1) {
  alert("You didnt select a fruit!");
  return false;
} else {
  alert("You selected " + quomonTest.rbtn[fruitSelected].value);
  return true;
}
}
</script>

<body>

<form name="quomonTest" onSubmit="return checkFruitEntered()">
Select A Fruit :
<input type="radio" name="rbtn" value="apple">I like Apples
<input type="radio" name="rbtn" value="pear">I need some Pears
<input type="radio" name="rbtn" value="bananas">I love Bananas
<br>
<input type="submit">
</form>

</body>
</html>

nidhi

Date:: Jan 29, 2009

Time:: 09:34

forgot to add, to get to the form variable in javascript, do the following

<formname>.<field name>

in this case, formname is quomonTest (code=<form name="quomonTest") and field is called rbtn (code=name="rbtn")

admin

Date:: Mar 24, 2009

Time:: 09:45

The question looks to be abandoned by the user who asked it. If no action is taken within 2 days, a Quomon Moderator will consider closing the question and distributing the points.

The Quomon Team

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