一个的多个值<option>

Question

I'm trying to gain a better js-knowledge, and got a little problem. I want to give a option more than one vaule, and from what i could find other places, arrays with split was the best solution. But I can't get it to work. One side of the script is supposed to calculate a price, dependent on the selected destionation, while the other is the name on the destinaton.

<form name="ORDER" method="post" >
<select name="destination" id="destination_trV">
<OPTION VALUE="10,Cannes"> Cannes</option>
</form>

I want one part to grab the "10" to use this calculation purposes, and another to grab "Cannes" to write.

var dest_1 = (document.getElementById("destination_trV").value);
var vari_1 = dest_1.split(",",1);
var vari_2 = dest_1.split(",",1,2);

this is supposed to write out "10"

document.getElementById("linje5").innerHTML="Priceclass: " + vari_1 + "<br>";

this is supposed to write out "Cannes"

document.getElementById("linje6").innerHTML="Destination: " + vari_2 + "<br>";

But this doesn't work :)

Answer 1

Split does not work that way MDN split

string.split([separator][, limit])

Just do the split once

var vals = dest_1.split(",");
var vari_1 = vals[0];
var vari_2 = vals[1];

A better way would be to use data attributes.

Answer 2

What would happen if one of those values were to contain a , character? You'd need some form of encoding to preserve the original data. Instead of trying to jam multiple values into a single attribute, you'd be better off splitting those values into separate [data-*] attributes :

...
<option value="Cannes" data-destination="Cannes" data-price-class="10">Cannes</option>
...

That way, when you want the values, you can select the element and get the attribute values separately:

(function () {
    var opt,
        destination,
        priceClass;
    opt = document.getElementById("destination_trV");
    destination = opt.getAttribute('data-destination');
    priceClass = opt.getAttribute('data-price-class');
    document.getElementById('linje5').innerHTML = 'Priceclass: ' + priceClass + '<br>';
    document.getElementById('linje6').innerHTML = 'Destination: ' + destination + '<br>';
}());