怎样使用juqery-ui完成联想查询的功能

$(function() {
    var availableTags = [
      "ActionScript",
      "AppleScript",
      "Asp",
      "BASIC",
      "Python",
      "Ruby",
      "Scala",
      "Scheme"
        ];
    $( "#tags" ).autocomplete({
         source: availableTags
    });
  });

source: function (request, response) {
    $.ajax({
        url: '',
        type: "POST",
        dataType: "json",
        data: {},
        success: function (data) {
            that.lineData=data;
            response(data);
        }
    });
},
minLength: 1,
scrollHeight: 1000,
autoFocus: true

.ui-helper-hidden-accessible {display:none;}
.ui-autocomplete { position: absolute; cursor: default; border-radius: 3px; border: 1px solid #c0c0c0; }
.ui-menu {list-style: none;padding: 0;margin: 0;display: block;outline: none;}
.ui-menu .ui-menu-item a {text-decoration:none;display:block;padding:.2em .4em;line-height:1.5;zoom:1;}
.ui-state-hover, .ui-widget-content .ui-state-hover, .ui-widget-header .ui-state-hover, .ui-state-focus, 
.ui-widget-content .ui-state-focus, .ui-widget-header 
.ui-state-focus {background: #5897fb;border: none;color:#000;border-radius:0;font-weight: normal;}