JS对数据库进行增删改查

JavaScript操作数据库JS操作Access数据库，跟其他语言操作差不多，总结了一下习惯代码，仅供参考学习。
现在在F盘有文件abc.mdf，表名为Student，一共2个字段，Id数字类型主键，stuName文本类型，现对该表进行增删改查的操作：

1.查询
<HTML>
<HEAD>
<TITLE>数据查询</TITLE>
<Script >
var conn = new ActiveXObject("ADODB.Connection");
conn.Open("DBQ=f://abc.mdb;DRIVER={Microsoft Access Driver (*.mdb)};");
var rs = new ActiveXObject("ADODB.Recordset");
var sql="select * from Student";
rs.open(sql, conn);
var html="";
while(!rs.EOF)
{ www.zzzyk.com
html=html+rs.Fields("Id")+" "+rs.Fields("stuName");
rs.moveNext();
}
document.write(html);
rs.close();
rs = null;
conn.close();
conn = null;
</script>
</HEAD>
<BODY>
</BODY>
</HTML>

2.增加操作
<HTML>
<HEAD>
<TITLE>增加操作</TITLE>
<script language="javascript">
function addUser(id,stuName)
{
//用 JavaScript 写服务器端连接数据库的代码示例
var conn = new ActiveXObject("ADODB.Connection");
conn.Open("DBQ=F://abc.mdb;DRIVER={Microsoft Access Driver (*.mdb)};");
var sql="insert into Student(ID,stuName) values("+id+",'"+stuName+"')";
try{
   conn.execute(sql);
   alert("添加成功");
}
catch(e){
   document.write(e.description);
   alert("添加失败~~~");
}
conn.close();

}
</script>
</HEAD>

3.删除操作
<HTML>
<HEAD>
<TITLE>删除操作</TITLE>
<script language="javascript">
function delStu(id)
{
   var conn = new ActiveXObject("ADODB.Connection");
   conn.Open("DBQ=F://abc.mdb;DRIVER={Microsoft Access Driver (*.mdb)};");
   var sql="delete from Student where Id=2";
   conn.execute(sql);
   conn.close();
   conn = null;
   alert("修改成功");
}
</script>
</HEAD>

4.修改操作
<HTML>
<HEAD>
<TITLE>修改操作 </TITLE>
</HEAD>
<script>
function updateUser(userId,userName)
{
   var conn = new ActiveXObject("ADODB.Connection");
   conn.Open("DBQ=F://abc.mdb;DRIVER={Microsoft Access Driver (*.mdb)};");
   var rs = new ActiveXObject("ADODB.Recordset");
   var sql="update Student set stuName='" + userName + "' where Id=" + userId + "";
   conn.execute(sql);
   conn.close();
   conn = null;
   alert("修改成功");
}
</script>
<BODY>
   <table width=100 border=1>
   <tr bgcolor='#f4f4f4'>
    <td>编号</td>
    <td>姓名</td>
   </tr>
   <tr>
    <td><input id="stuId" /></td>
    <td><input id="stuName"/></td>
   </tr>
</table>
<input name="1" type="button" value="修改" onclick="updateUser(stuId.value,stuName.value)"/>
</BODY>
</HTML>

另外，JS也可以操作SQL Server数据库
数据库名为：MySchool，表名为Student，StudentId为int类型，自增列，studentName为学生姓名，为varchar类型。数据库用户名为sa，密码是ok，

<HTML>
<HEAD>
<TITLE>SQL数据查询</TITLE>
<Script >
var conn = new ActiveXObject("ADODB.Connection");
conn.Open("Driver={SQL server};Server=.;DataBase=MySchool;UID=sa;Password=ok;");//打开数据库
var rs = new ActiveXObject("ADODB.Recordset");
var sql="select * from Student";
rs.open(sql, conn);
var html="";
while(!rs.EOF)
{
html=html+rs.Fields("StudentId")+" "+rs.Fields("studentName")+"<br/>";
rs.moveNext();
}
document.write(html);
rs.close();
rs = null;
conn.close();
conn = null;
</script>
</HEAD>

补充：web前端 , JavaScript ,