jQuery UI自动完成与数据库

终于找到了适合我需求的解决方案

$("#login_name").autocomplete({  source: function(request, response){    $.post("/ajax/login_name.php", {data:request.term}, function(data){  response($.map(data, function(item) {        return { label: item.user_login_name, value: item.user_id        }        }))    }, "json");  },  minLength: 2,  dataType: "json",  cache: false,  focus: function(event, ui) {    return false;  },  select: function(event, ui) {    this.value = ui.item.label;        return false;  }});