setting placeholder attribute of html textbox based on selected value of html drop down list

So i have a html page with a dropdown list and a textbox.

If I select NBA from the drop downlist i want the placeholder attribute property of the texbox set to this:  Type in NBA ID
If I select NFL from the drop downlist i want the placeholder attribute property of the texbox set to this:  Type in NFL ID
If I select MLB from the drop downlist i want the placeholder attribute property of the texbox set to this:  Type in MLB ID

I have this fiddle.

https://jsfiddle.net/frpn3sg0/

But when I select an item from the dropdownlist, it's not setting the placeholder attribute property of the texbox.

Any ideas of where my syntax is wrong?
LVL 1
maqskywalkerAsked:
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Rainer JeschorCommented:
Hi,
not sure if this is syntax related but the following code works - with jQuery 1.11 version in jsFiddle:
$(document).ready(function() {
    $("#DDLSports").on("change", function () {
                var select_value = $(this).val();
                // set a string to a variable
                var message= "<p>The selected value is: " + select_value + "</p>";
                // show the variable on screen
                $('.main').append(message);
                if (select_value == '1') {
                    $('.TextBoxSports').attr('placeholder', 'Type in NBA ID');
                } else if (select_value == '2') {
                    $('.TextBoxSports').attr('placeholder', 'Type in NFL ID');
                } else if (select_value == '3') {
                    $('.TextBoxSports').attr('placeholder', 'Type in MLB ID');
                } else {
                    $('.TextBoxSports').attr('placeholder', '');
                }
            });
});

Open in new window

Sample:
https://jsfiddle.net/EE_RainerJ/xk4Lefmo/

HTH
Rainer

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