jQuery UI AutoComplete 使用小记

时间：2010-08-19 来源：小小网虫

页面:

代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test.aspx.cs" Inherits="web_Test" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>测试</title>
    <link type="text/css" rel="stylesheet" />
    <link href="../css/jquery.ui.all.css" rel="stylesheet" type="text/css" />

    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>

    <!-- 解决下拉列表框被遮盖 jquery.bgiframe -->

    <script type="text/javascript" language="javascript" src="../js/jQui/jquery.bgiframe-2.1.1.js"></script>

    <script type="text/javascript" language="javascript" src="../js/jQui/jquery.ui.core.js"></script>

    <script type="text/javascript" language="javascript" src="../js/jQui/jquery.ui.widget.js"></script>

    <script type="text/javascript" language="javascript" src="../js/jQui/jquery.ui.mouse.js"></script>

    <!-- jquery.ui.autocomplete -->

    <script type="text/javascript" language="javascript" src="../js/jQui/jquery.ui.autocomplete.js"></script>

    <script language="javascript" type="text/javascript">
    
    $(function(){
        $("#txtTest").autocomplete({
        minLength:1,
        source: function(request, response) {                
                $.ajax({
                    url: "../ajax/GetAllWords.ashx",
                    dataType: "json",
                    data: request,
                    success: function( data ) {
                        response( data );
                    }            
                });
            }
        });

    });

    </script>

</head>
<body>
    <form id="form1" runat="server">
        <div>
            <input id="txtTest" type="text" />
        </div>
    </form>
</body>
</html>

后台:

代码

<%@ WebHandler Language="C#" Class="GetAllWords" %>

using System;
using System.Web;

public class GetAllWords : IHttpHandler
{

    public void ProcessRequest(HttpContext context)
    {
        if (context.Request.QueryString["term"] != null && context.Request.QueryString["term"] != "")
        {
            context.Response.Clear();
            context.Response.Charset = "utf-8";
            context.Response.Buffer = true;
            context.Response.ContentEncoding = System.Text.Encoding.UTF8;
            context.Response.ContentType = "text/plain";
            context.Response.Write(GetLikeUserName(context.Request.QueryString["term"]));
            context.Response.Flush();
            context.Response.Close();
            context.Response.End();
        }
    }

    /// <summary>
    /// 拼接json
    /// </summary>
    /// <param name="key">关键词</param>
    /// <returns></returns>
    private String GetLikeUserName(string key)
    {
        jhg.BLL.web_wordManager wordManager = new jhg.BLL.web_wordManager();

        //搜索,返回10个关键词
        string[] listWord = wordManager.GetSearchWord(key, 10);

        System.Text.StringBuilder sbstr = new System.Text.StringBuilder("[");

        int ct = listWord.Length;

        for (int i = 0; i < ct; i++)
        {
            sbstr.Append("\"" + listWord[i] + "\"");
            if (i == ct - 1)
                sbstr.Append("]");
            else
                sbstr.Append(",");
        }
        return sbstr.ToString();
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }

}

注:

文件:jquery.ui.autocomplete.css

.ui-autocomplete { position: absolute; cursor: default; }

去掉: position: absolute;