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how to assign a drop down list selection to a textbox

Posted By:      Posted Date: April 14, 2011    Points: 0   Category :ASP.Net

I have a textbox called "TextBox1". i am processing a drop down list "DDL" with 4 items. i want to display the selected value in the text box from my script. i tried this but the text box is empty.

 $( function() {
     $( 'select[id$=DDL]').bind("change keyup", function() {

         var ti = $("input[id$='TextBox1']");
         ti = $(this).val();

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