利用autocomplete.js实现仿搜索效果（ajax动态获取后端[C#]数据）

实现功能描述：

1、实现搜索框的智能提示

2、第二次浏览器缓存结果

3、实现仿百度搜索

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title></title>
    <script src="js/jquery-1.8.3.min.js"></script>
    <script src="jsPlugin/autocomplete/jquery.autocomplete.js"></script>
    <style>
        * { margin: 0px; padding: 0px; }
        #wrapper { height: 100%; padding-top: 100px; }
        .s-skin-container { position: fixed; _position: absolute; top: 0; left: 0; height: 100%; width: 100%; min-width: 1000px; z-index: -10; background-position: center 0; background-repeat: no-repeat; background-size: cover; -webkit-background-size: cover; -o-background-size: cover; zoom: 1; }
        .s-form { width: 700px; height: 100%; min-height: 293px; margin: 0 auto 0 auto; text-align: left; z-index: 100; }

        form { margin: 8px 0 0 25px; }
        input { outline: none; }
        #s_kw_wrap { display: inline-block; zoom: 1; vertical-align: top; width: 500px; }
        #kw { width: 488px; padding: 10px 9px 10px 7px; border: 0; background-image: none; height: 20px; line-height: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.2); -webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.2); -moz-box-shadow: 0 1px 3px rgba(0,0,0,0.2); }

        .s_btn_wr { display: inline-block; zoom: 1; vertical-align: top; width: 102px; height: 38px; border: 1px solid #38f; border-bottom: 1px solid #2e7ae5; background-color: #38f; }
        .btn { cursor: pointer; width: 102px; height: 38px; line-height: 38px; padding: 0; border: 0; background: none; background-color: #38f; font-size: 16px; color: white; box-shadow: none; font-weight: normal; }
        .btn:hover { height: 39px; _height: 38px; background-color: #317ef3; border-bottom: 1px solid #2868c8; box-shadow: 1px 1px 1px #ccc; }

        /*选择提示项*/
        .autocomplete-suggestions { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; border: 1px solid #ccc; background: #FFF; cursor: default; overflow: auto; -webkit-box-shadow: 1px 4px 3px rgba(50, 50, 50, 0.64); -moz-box-shadow: 1px 4px 3px rgba(50, 50, 50, 0.64); box-shadow: 1px 4px 3px rgba(50, 50, 50, 0.64); }
        .autocomplete-suggestion { padding: 2px 5px; white-space: nowrap; overflow: hidden; }
        .autocomplete-no-suggestion { padding: 2px 5px; }
        .autocomplete-selected { background: #F0F0F0; }
        .autocomplete-suggestions strong { font-weight: bold; color: #ff6a00; }
        .autocomplete-group { padding: 2px 5px; }
        .autocomplete-group strong { font-weight: bold; font-size: 16px; color: #000; display: block; border-bottom: 1px solid #000; }
    </style>
</head>
<body>
    <div id="wrapper"> 
        <div class="s-skin-container" style="background-image: url(https://ss2.bdstatic.com/lfoZeXSm1A5BphGlnYG/skin/5.jpg);"></div>
        <div class="s-form">
            <form action="#">
                <span id="s_kw_wrap">
                    <input type="text" id="kw" maxlength="100" autocomplete="off" />
                </span>
                <span class=" s_btn_wr">
                    <input type="submit" value="搜索一下" class="btn" />
                </span>
            </form>
        </div>
    </div>
    <script>
        $(function () {
            $("#kw").focus();

            $("#kw").autocomplete({
                ajaxSettings: { url: "/ajax/autoHandler.ashx" }
            })
        })
    </script>
</body>
</html>

后端代码

  /// <summary>
    ///  提供搜索数据
    /// </summary>
    public class autoHandler : IHttpHandler, IRequiresSessionState
    {
        public HttpRequest Request
        {
            get
            {
                return HttpContext.Current.Request;
            }
        }

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "application/json";
            string query = Request["query"];
            object data = null;
            if (!string.IsNullOrEmpty(query))
            {
                List<AutoKeyWordEntity> list = GetSearchList(query);
                data = list;
            }

            var newData = new { suggestions = data };
            string jsonData = JsonConvert.SerializeObject(newData);
            context.Response.Write(jsonData);

        }

        private List<AutoKeyWordEntity> GetSearchList(string query)
        {
            List<AutoKeyWordEntity> list = new List<AutoKeyWordEntity>();
            if (query.Contains("百") || query.Contains("b"))
            {
                list.Add(new AutoKeyWordEntity() { value = "百度" });
                list.Add(new AutoKeyWordEntity() { value = "b百度" });
            }
            else if (query.Contains("360") || query.Contains("3") || query.Contains("6"))
            {
                list.Add(new AutoKeyWordEntity() { value = "360" });
                list.Add(new AutoKeyWordEntity() { value = "3" });
                list.Add(new AutoKeyWordEntity() { value = "360搜索" });
            }
            else if (query.Contains("神"))
            {
                list.Add(new AutoKeyWordEntity() { value = "神马搜索" });
            }
            else if (query.Contains("1"))
            {
                list.Add(new AutoKeyWordEntity() { value = "1一个人" });
            }
            else
            {
                list.Add(new AutoKeyWordEntity() { value = "我的网" });
            }
            return list;
        }
        public class AutoKeyWordEntity
        {
            public string value { get; set; }
        }

        public bool IsReusable
        {
            get { return true; }
        }
    }

　　效果：

下载地址 http://www.jq22.com/jquery-info12967