jquery - cant get values to keep adding to input -

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i have issue hope can me with. i'm able retrieve text value of checkbox. want achieve every time click on checkbox, adds text input id of "selected". example: if checkbox a, checkbox b, checkbox c checked, want show "a, b, c". instead i'm getting text of current 1 checked. great. 

$(document).ready(function(){     $("#listbox input").click(function() {             var cbtext = $(this).next().text();              $('#selected').val(cbtext);             }); });

it sounds want #selected have text values selected checkboxes.

if that's right, try this: http://jsfiddle.net/naacw/4/ (updated)

$(document).ready(function(){     $("#listbox input").click(function() {         var cbtext = $('#listbox').find(':checked').next()             .map(function() {                 return $.text([this]);             }).get().join(', ');          $('#selected').val(cbtext);         }); });​

edit: changed use $('#listbox').find(':checked') instead of $(this).parent().find(':checked') correctly suggested @felix kling


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