爲什麼選擇使用jQuery和PHP自動填充不起作用？

Question

我想在我的表單中使用jQuery，PHP和MySQL使用multiple autocomplete。但它不適合我。我有什麼錯誤嗎？

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HTML代碼：

<input type="text" id="country" name="country" /> 

jQuery代碼：

$("#countries") 
     // don't navigate away from the field on tab when selecting an item 
     .bind("keydown", function(event) { 
      if (event.keyCode === $.ui.keyCode.TAB && 
       $(this).data("autocomplete").menu.active) { 
       event.preventDefault(); 
      } 
     }) 

     .autocomplete({ 
      source: function(request, response) { 
       $.getJSON("process/find_countries.php", { 
        term: extractLast(request.term) 
       }, response); 
      }, 
      search: function() { 
       // custom minLength 
       var term = extractLast(this.value); 
       if (term.length < 2) { 
        return false; 
       } 
      }, 
      focus: function() { 
       // prevent value inserted on focus 
       return false; 
      }, 
      select: function(event, ui) { 
       var terms = split(this.value); 
       // remove the current input 
       terms.pop(); 
       // add the selected item 
       terms.push(ui.item.value); 
       // add placeholder to get the comma-and-space at the end 
       terms.push(""); 
       this.value = terms.join(", "); 
       return false; 
      } 
     }); 

PHP代碼

$result = array(); 
    $term = strtolower($_GET["term"]); 
    $sql = "SELECT title FROM tbl_countries WHERE title LIKE ?"; 
    $q = $db->prepare($sql); 
    $q->execute(array('%'.$term.'%')); 
    $rows = $q->rowCount(); 
    echo($rows); 
    while ($r = $q->fetch()) 
    { 
     array_push($result,array('label'=>$r['title'], 'value'=>$r['title'])); 
    } 
    echo json_encode($result); 

Answer 1

參見從服務器的螢火蟲響應。和爲什麼你回聲（$行）; ？