eval on checkbox

[Guest_imported]

If I have a couple of checkboxes: checkbox1, checkbox2, checkbox3....

I would like to loop on it using an eval(document.form.checkbox i.checked)....where i is 1, 2 or 3...

is this possible?

Thanks a lot.

 

[GIGN]

You could use the form.elements array, and ask each element for it's type. if(type=='checkbox')...do your checking.
b² - benbiddington@surf4nix.com

 

[Guest_imported]

Thanks b2, actually I'm using that technique right now and it works, the problem is performance, it goes through all of your elements and checks for checkboxes...it's really slow for it has to loop through everything, checkbox, input, even text and buttons...that's why I'm looking for a way to use the eval() but just can't master this eval() ...
do you know how to eval(checkbox i) where i could be a counter?

Thanks

 

[GIGN]

Ahh - O.K. yes you should be able to.Here you go:

function selectAll(){
for(var i=1;i<5;i++){

eval(&quot;document.F1.checkbox&quot; + i+ &quot;.checked=true&quot;
}

}


The eval() method executes strings as working code - so you just have to make sure you have astring as an argument. The integer i is converted automatically to a string - when they are concatenated.

P.S. make sure you have the right value in the for brackets - because if it iterates past the number of existing objects - you will get an error message, even though it will not affect anything else, just an annoyance.

Also another curious thing - i tried putting i=5, for the top limit, and the browser hangs (?) hmmm - so I guess you have to use less than(<) weird!
b² - benbiddington@surf4nix.com

 

[Guest_imported]

Thanks b2