I am trying to get the selected option from a dropdown and populate another item with that text, as follows. IE is barking up a storm and it doesn\'t work in Firefox:
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The above would very well work, but it seems you have missed the jQuery typecast for the dropdown text. Other than that it would be advisable to use .val() to set text for an input text type element. With these changes the code would look like the following:
$('#txtEntry2').val($('#ddlCodes option:selected').text());