Javascript-处理mdb数据库
用js操作mdb数据库的一些操作，包括数据的读取和存储；
html页面信息
mdb数据库表一
mdb数据库表二
具体代码如下：
//获得fileName的路径；
function serverMapPath(fileName) {
var syspath = location.href; //file:///c:/Documents%20and%20Settings/Administrator/桌面/新建文件夹/handle-mdb.html
alert(syspath)
syspath = syspath.toLowerCase();
myPosition = syspath.lastIndexOf("/");
syspath = syspath.substring(0, parseInt(myPosition) + 1);
syspath = syspath.replace("file:///", "");
syspath = syspath.replace(new RegExp("%20", "gm"), " ");
syspath = syspath + fileName; //c:/documents and settings/administrator/桌面/新建文件夹/Database.mdb；
alert(syspath)
return syspath.toString();
}
//获取mdb数据库中的数据到html-方法1-多字段名称；
function loadData(LibleName) {
var conn = new ActiveXObject("ADODB.Connection");
var connStr = "DBQ=" + serverMapPath("Database.mdb") + ";DRIVER={Microsoft Access Driver (*.mdb)};"
//打开数据库；
conn.Open(connStr);
var rs = new ActiveXObject("ADODB.Recordset");
var sql = "select * from " + LibleName;
//打开记录集；
rs.open(sql, conn);
while (!rs.EOF) {
var feildName = "";
var valueCell = "";
var inputs = document.getElementsByTagName("input");
var textAreas = document.getElementsByTagName("textarea");
//rs.fields.count为字段名称的总数；
for(var z=0;rs.fields.count>z;z++){
//filedName为字段名称；
filedName = rs(z).Name;
//mdb中各字段内存储的值；
valueCell = (rs.Fields(filedName).Value);
if (valueCell == null){
valueCell = "";
}
for (var i = 0; i < inputs.length; i++) {
var inputCell = inputs[i];
if(filedName==inputCell.id){
inputCell.value=valueCell;
}
}
for (var j = 0; j < textAreas.length; j++){
var textAreaCell = textAreas[j];
if (filedName == textAreas.id){
textAreaCell.value = valueCell;
}
}
}
rs.moveNext();
}
rs.close;
rs = null;
}
//获取mdb数据库中的数据到html-方法2-两个字段名称-一个ID，一个name；
function Show(tableName) {
var str =tableName;
var conn = new ActiveXObject("ADODB.Connection");
var connStr = "DBQ=" + serverMapPath("Database.mdb") + ";DRIVER={Microsoft Access Driver (*.mdb)};"
conn.Open(connStr);
var rs = new ActiveXObject("ADODB.Recordset");
var sql = "select * from "+str+" order by id";
rs.open(sql, conn);
theInput = null;
while (!rs.EOF) {
var htmlID = "";
var value = "";
//mdb中的ID是正整数，html中的ID由四位数字组成，位数不够的用0不足；
//如mdb中的‘1’，html中是‘0001’；
htmlID = rs.Fields("id").value;
if(htmlID.length==1){
htmlID = '000'+htmlID;
}else if(htmlID.length==2){
htmlID='00'+htmlID;
}else if(s.length==3){
htmlID='0'+htmlID;
}
try
{
theInput = document.getElementById(htmlID);
if (theInput !== null){
value = (rs.Fields("name").Value);
if (theInput.type == "text"){
theInput.value = value;
}
if (theInput.type == "textarea") {
theInput.value = value;
}
if (theInput.type == "radio"){
if (value == "√"){theInput.checked = true}
if (value == "□"){theInput.checked = false}
}
if (theInput.type == "checkbox"){
if (value == "√"){theInput.checked = true}
if (value == "□"){theInput.checked = false}
}
if (theInput.name == "select") {
for(j = 0; j< theInput.length ; j++){
if (theInput.options[j].value == value) {
theInput.options[j].selected = true;
}
}
}
//name是值为‘uu’的处理；
if(theInput.className == "uu"){
theInput.innerHTML = value;
}
}
}
catch(E)
{
}
rs.moveNext();
}
conn.close();
conn = null;
}
//把html中填写的内容更新到数据库；
function update(str) {
var conn = new ActiveXObject("ADODB.Connection");
var connStr = "DBQ=" + serverMapPath("Database.mdb") + ";DRIVER={Microsoft Access Driver (*.mdb)};"
conn.Open(connStr);
InputList = document.getElementsByTagName("input");
TheInput = null;
for(i = 0; i < InputList.length; i++) {
TheInput = InputList[i];
var TheInputId = TheInput.id;
TheInputId = parseInt(TheInputId,10);
if(!isNaN(TheInputId)){
if (TheInput !== null){
//radio单选框的处理
if (TheInput.type == "radio"){
var sql = "delete from "+ str +" where id = '"+ TheInputId+"'";
conn.execute(sql);
if (TheInput.checked == true){
var sql = "insert into "+ str +" values("+ TheInputId +",'" + "√" + "')";
conn.execute(sql);
}
if (TheInput.checked == false){
var sql = "insert into "+ str +" values("+ TheInputId +",'" + "□" + "')";
conn.execute(sql);
}
}
//checkbox复选框的处理；
if (TheInput.type == "checkbox"){
var sql = "delete from "+ str +" where id = '"+ TheInputId+"'";
conn.execute(sql);
if (TheInput.checked == true){
var sql = "insert into "+ str +" values("+ TheInputId +",'" + "√" + "')";
conn.execute(sql);
}
if (TheInput.checked == false){
var sql = "insert into "+ str +" values("+ TheInputId +",'" + "□" + "')";
conn.execute(sql);
}
}
//一般文本输入框处理
if (TheInput.type == "text") {
if (TheInput.value !== null){
var sql = "delete from "+ str +" where id = '"+ TheInputId+"'";
conn.execute(sql);
var sql = "insert into " + str + " values(" + TheInputId + ",'" + TheInput.value + "')";
conn.execute(sql);
}
}
//隐藏域的处理
if (TheInput.type == "hidden") {
if (TheInput.value !== null){
var sql = "delete from "+ str +" where id = '"+ TheInputId+"'";
conn.execute(sql);
sql = "insert into " + str + " values(" + TheInputId + ",'" + TheInput.value + "')";
conn.execute(sql);
}
}
}
}
}
//textarea多行文本框；
InputList = document.getElementsByTagName("textarea");
TheInput = null;
for(i = 0; i < InputList.length; i++) {
TheInput = InputList[i];
var TheInputId = TheInput.id;
TheInputId = parseInt(TheInputId,10);
if(!isNaN(TheInputId)){
if (TheInput !== null){
if (TheInput.text !== null){
var sql = "delete from "+ str +" where id = '"+ TheInputId+"'";
conn.execute(sql);
var sql = "insert into "+ str +" values("+ TheInputId +",'" + TheInput.value + "')";
conn.execute(sql);
}
}
}
}
//select下拉框的处理
InputList = document.getElementsByTagName("select");
TheInput = null;
for(i = 0; i < InputList.length; i++) {
TheInput = InputList[i];
var TheInputId = TheInput.id;
TheInputId = parseInt(TheInputId,10);
if(!isNaN(TheInputId)){
if (TheInput !== null){
if (TheInput.name == "select") {
var sql = "delete from "+ str +" where id = '"+ TheInputId+"'";
conn.execute(sql);
for(j = 0; j< TheInput.length; j++){
if (TheInput.options[j].selected) {
var sql = "insert into "+ str +" values("+ TheInputId +",'" + TheInput.options[j].value + "')";
conn.execute(sql);
}
}
}
}
}
}
conn.close();
conn = null;
}