passing checkbox value with onclick 1

[skiflyer]

<input type="checkbox" onClick="foo(this.value);" />

...

function foo(someValue)
{
  alert(someValue);
}

Always pops up on, never off or undefined, or a blank string or whatever I should be expecting for the off value.

ANy idea why, and any idea what the fix may be?

 

[elegidito]

do you want to use

onClick='foo(this.checked)'

"It is the mark of an educated mind to be able to entertain a thought without accepting it." - Aristotle

 

[skiflyer]

Well apparently using this.checked sends a boolean I can deal with... still a little surprised that this.value doesn't work.

 

[skiflyer]

heh, we solved it at the same time.... well within a second anyway... thanks.

 

[trollacious]

If you don't provide a value in a checkbox, the default is on. Your example doesn't show a value in the checkbox.

Lee

 

[skiflyer]

Ah right, just cause value sounds like it would be on/off... in fact, value is just another attribute and it defaults to on for checkboxes... .checked is the actual stateful holder of checkboxes and radio buttons (if I'm not mistaken) to find out if they're actually on or not.

THanks for the explanation.