作用JavaScript访问和操作数据库

JS操作 Access 数据库

<SCRIPT LANGUAGE="JavaScript">
<!--
var filePath = location.href.substring(0, location.href.indexOf("实例197.连接Access数据库.html"));    //以当前页面文件为基础，找到文件所在的绝对路径
var path = filePath + "197.mdb";
path = path.substring(8);
var objdbConn = new ActiveXObject("ADODB.Connection");
var strdsn = "driver={Microsoft Access Driver (*.mdb)};dbq=" + path;
objdbConn.Open(strdsn);
document.write("连接ACCESS数据库成功!<br>");
objdbConn.Close();
//-->
</SCRIPT>

 连接SQL Server数据库

<SCRIPT LANGUAGE="JavaScript">
<!--
var objdbConn = new ActiveXObject("ADODB.Connection");
var strdsn = "Driver={SQL Server};SERVER=(local);UID=sa;PWD=111111;DATABASE=hljdatabase";
objdbConn.Open(strdsn);
document.write("数据库连接成功<br>");
objdbConn.Close();
//-->
</SCRIPT>

 查询数据库实例

<SCRIPT LANGUAGE="JavaScript">
<!--
var objdbConn = new ActiveXObject("ADODB.Connection");
var strdsn = "Driver={SQL Server};SERVER=(local);UID=sa;PWD=111111;DATABASE=hljdatabase";      // 需要修改自己的服务器地址,用户名,密码
objdbConn.Open(strdsn);
var objrs = objdbConn.Execute("SELECT * FROM 表 where 关联=0");                  // 输入本地的表
var fdCount = objrs.Fields.Count - 1;
if (!objrs.EOF){
  document.write("<table border=1><tr>");
  for (var i=0; i <= fdCount; i++)
      document.write("<td><b>" + objrs.Fields(i).Name + "</b></td>");
  document.write("</tr>");

  while (!objrs.EOF){
    document.write("<tr>");
    for (i=0; i <= fdCount; i++)
       document.write("<td valign='top'>" + objrs.Fields(i).Value + "</td>");
    document.write("</tr>");
    objrs.moveNext();
  }
  document.write("</table>");
}
else
  document.write("数据库内没有记录!<br>");
objrs.Close();
objdbConn.Close();
//-->
</SCRIPT>

 操作数据库实例

<SCRIPT LANGUAGE="JavaScript">
<!--
var objdbConn = new ActiveXObject("ADODB.Connection");
var strdsn = "Driver={SQL Server};SERVER=(local);UID=sa;PWD=111111;DATABASE=hljdatabase";   // 需要修改自己的服务器地址,用户名,密码
objdbConn.Open(strdsn);
objdbConn.Execute("update 表 set 关联=0");                    // 请写入自己的执行语句
document.write("更新数据成功!<br>");
objdbConn.Close();
//-->
</SCRIPT>