Show/Hide using drop down list

Question

Hello I am trying to use this code below. I like the code but I want the default to be DIV Area 1. I have the HTML code showing DIV Area 1 in the drop down menu but I want the

Answer 1

$('.box').hide().first().show();

Or:

$('.box').hide().filter("#divarea1").show(); 

Live DEMO

Put one of the above in the DOM ready event:

$(function(){ /*...*/ });

Or

$(document).ready(function(){ /* ... */ });

Full code: (It should answer you next question regarding how to show the selected div...)

$(document).ready(function() {

    $('.box').hide().filter("#divarea1").show();

    $('#dropdown').change(function() {
        var selectedId= $(this).find(':selected').text().replace(/\s/g, "").toLowerCase();
        console.log(selectedId);
        $('.box').hide().filter('#' + selectedId).show();
    });
});​

Answer 2

could do this...

$('.box').hide().filter(':first').show();

Answer 3

A lot of complicated answers for a simple problem:

$('.box:gt(0)').hide();

I'd code it up like this:

 $(document).ready(function(){
     $('.box:gt(0)').hide();

    $('#dropdown').change(function() {
        $('.box:visible').hide();
        if ($(this).prop('selectedIndex')>0)
            $('.box').eq($(this).prop('selectedIndex')-1).show();        
    });
});​

http://jsfiddle.net/lucuma/xNZWY/

If you remove the 1st option from your dropdown (since you are preselecting is it necessary?) it becomes a little simpler since we can remove the if

$(document).ready(function(){
     $('.box:gt(0)').hide();

    $('#dropdown').change(function() {
        $('.box:visible').hide();
        $('.box').eq($(this).prop('selectedIndex')-1).show();        
    });
});​