Re: Passing HTML array index to JS?

Hey Philip, But will that ID value identify the right member of each array? I thought about that but just assumed that it would not. Skip Philip Thompson wrote:

On Dec 7, 2009, at 5:02 PM, Skip Evans wrote:

Hey all, I have an HTML field like this <input type="text" name="qty[]" value="!!quantity!!" size="4" style="text-align: right;" onblur="calculateBidUnit();"> ... and what I need to do is pass to the calculateBidUnit function the value of quantity, do a calculation on it and plug into this field. <input type="text" name="bid_unit_value[]" value="" size="4"> Which of course I know how to do for non-array values, but not sure how to get the values to do the calculation on the JS side if the fields are in an array. Any help, as always, is greatly appreciated, Skip

This question is probably more appropriate for a JS list... but I'm not mean, so I'll let you know. The easiest way would be to update the blur event qty input: onblur="calculateBidUnit(this.value);" Now you have the value sent to that function. Another way would be to give your input and output an id each - let's say 'qty' and 'bid_unit_value', respectively. Then reference those ids in your function. This gives you the following: <input type="text" name="qty[]" value="!!quantity!!" onblur="calculateBidUnit();" id="qty" /> <input type="text" name="bid_unit_value[]" value="" id="bid_unit_value" /> <script type="text/javascript"> function calculateBidUnit () {

    var qty = document.getElementById('qty');
    var buv = document.getElementById('bid_unit_value');
    buv.value = qty.value;

} </script> I'll give you a small warning. All browsers are not alike, so my recommendation would be to use a library that handles the cross-browser compatibility portion of javascript (I use Mootools). Nonetheless, the above *should* work. Learning the bare bones of javascript will help with the more complicated stuff and you'll be smarter for it! =P Hope that helps, ~Philip

-- ==================================== Skip Evans PenguinSites.com, LLC 503 S Baldwin St, #1 Madison WI 53703 608.250.2720 http://penguinsites.com ------------------------------------ Those of you who believe in telekinesis, raise my hand. -- Kurt Vonnegut