Dynamic dropdown

Question

I have two dropdowns in my site. I want to change the number of options and the values of options of one dropdown depending on the value we choosing on the other dropbox by

Answer 1

Try this.

HTML

    select
    English
    Tamil
    Telugu



    select

JavaScript

function SetMedia(objLanguage) {
    var objMedia = document.getElementById("media");
    objMedia.options.length = 0;
        objMedia.disabled = false;
    switch (objLanguage.value) {
    case "English":
        objMedia.options.add(new Option("The Indian Express"));
        objMedia.options.add(new Option("The Hindu"));
        break;
    case "Tamil":
        objMedia.options.add(new Option("Tamil Paper 1"));
        objMedia.options.add(new Option("Tamil Paper 2"));
        break;
    case "Telugu":
        objMedia.options.add(new Option("Telugu Paper 1"));
        objMedia.options.add(new Option("Telugu Paper 2"));
        break;
    default:
        objMedia.options.add(new Option("select"));
        objMedia.disabled = true;
        break;
    }
}

Demo here: http://jsfiddle.net/naveen/z48dc/