Question

I have browsed StackOverflow and found a couple questions/answers that are close but not exact for my situation. I am following this example:

http://www.javascriptkit.com/javatutors/selectcontent2.shtml

And my JavaScript code is like this:

var cityList = document.selectionForm.cityListBox;
var cities = new Array();

cities[0] = "";
cities[1] = ["Eugene|eugeneValue", "Portland|portlandValue", "Salem|salemValue"];
cities[2] = ["Bellingham|bellinghamValue", "Onalaska|onalaskaValue", "Seattle|    seattleValue"];

function updateCities(cityGroup) 
{
    cityList.options.length = 0;

    if (cityGroup > 0)
    {
        for (i = 0; i < cities[cityGroup].length; i++)
        {
            cityList.options[cityList.options.length] = new Option(cities[cityGroup][i].split("|")[0], cities[cityGroup][i].split("|")[1]);
        }   
    }
}

And my HTML code like this:

<form name="selectionForm">
    <select name="stateListBox" size="3" style="width: 150px" onchange="updateCities(this.selectedIndex);">
        <option selected>Select a State >></option>
        <option value="oregon">Oregon</option>
        <option value="washington">Washington</option>
    </select>

    <select name="cityListBox" size="3" style="width: 150px" onclick="alert(this.options[this.options.selectedIndex].value);">
    </select>
</form>

As far as I can tell, this should work as described by the link above. I have had great experiences with the JavaScript Kit website, but this time I think I am missing something.

When I actually publish this to the page, I can click the states but nothing appears in the city box, as is expected.

Can anyone see the problem here?

Any help is appreciated.

PS – I apologize if there is a double post that I missed. Any references are also greatly appreciated.

Answer 1

in the for loop in updateCities, the statement starts with citylist.options
change citylist to cityList (Capital L)

Will work then.