jquery selectors - smart way to rewrite this function -

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i have this, , showing div if user clicked 1 button , not showing if user clicked other. working dumb way repeatition

$j(document).ready(function() {     $j('#button1').click( function () {          var data = $j("form").serialize();         $j.post('file.php', data, function(response){                    $j("#response").show();         });     });     $j('#button21').click( function () {          var data = $j("form").serialize();         $j.post('file.php', data, function(response){                    //do else                    });     }); });

i'd adding class selected buttons , pull event.target id click function:

    $j('.buttons').click(function(e) {         var buttonid = e.target.id,             data = $j("form").serialize();          $j.post('file.php', data, function(response) {             switch (buttonid) {                 case "button1":                     $j("#response").show();                     break;                 case "button21":                     //do else                     break;             }         });     });

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