Brian Williams wrote:
> i don't believe there is a need to use a class if they share a name
> i.e. amt[]
>
> should be able to use something along the lines of...
>
> $F('amt').each().invoke(function {......})
> ...
Right on track. You'll need $$() and inject()--see below.
http://prototypejs.org/api/utility/dollar-dollar
http://prototypejs.org/api/enumerable/inject
- Ken Snyder
var sum = $$('input[name="amt[]"]').inject(0, function(memo, input) {
memo += input.value;
return memo;
});
or if you define a sum() method for arrays, you can use pluck():
Array.prototype.sum = function(){
for (var i = 0, sum = 0; i < this.length; sum += this[i++]);
return sum;
}
var sum = $$('input[name="amt[]"]').pluck('value').sum();
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