BLOG from Great_Domino
File composition: Access database name is MyData.mdb, built a table named count, the table consists of two fields: ID and count, there is a data in the table: ('count', '100'). The text file is named count.txt, which is just written to a number. The static page name is CNT.HTM. All three files are placed in the same directory. Because of the Access database, it uses non-standard SQL syntax, so pay attention to the table name and field names need to add brackets: [] The following is the code in the page: where the getCountFromDB method is to operate the Access database, the getCountFromTXT method is TXT plain text is operated, both of which are passed locally.
new document </ title> <meta name = "generator" content = "editplus"> < Meta Name = "Author" content = "> <meta name =" keywords "content ="> <meta name = "description" content = "> <script language =" javascript "> <! - function getcountfromdb ( ) {// found the absolute path where the file is located is found. Var filepath = location.href.substring (0, location.href.indexof ("cnt.htm")); var path = filepath "mydata.mdb"; // Remove the most in front of the string "Files: // "These 8 characters. Path = path.substring (8); var updatecnt = 0; // Generates a query and update SQL statement. Var SQLSELCNT = "SELECT Count from [count] where id = 'count'"; var sqlupdcnt = "Update [count] set [count] = '"; // Establish a connection, and generate a related string www.zhangpeng.com. CN.</p>
<p>VAR Con = New ActiveXObject ("AdoDb.connection"); con.Provider = "microsoft.jet.OleDb.4.0"; con.connectionstring = "data source =" path; con.open; var = new activXObject (" AdoDb.recordset "); rs.open (SqlSelcnt, con); while (! Rs.eof) {var cnt = rs.fields (" count "); document.write (cnt); // will get the result plus 1 Update the database. Updatecnt = cnt * 1 1; rs.movenext;} r = NULL; SQLUPDCNT = SQLUPDCNT UPDATECNT "CON.EXECUTE (SQLUPDCNT); con.close (); con = null; } Function getCountFromtxt () {var filepath = location.href.substring (0, location.href.indexof ("cnt.htm")); var path = filepath "count.txt"; Path = path.substring (8) VAR nextcnt = 0; VAR FSO, F1, TS, S; // Open the text file in a read-only mode. Var forreading = 1; // Opens the text file in the read and write mode. Var forwriting = 2; fso = new activiXObject ("scripting.filesystemObject"); f1 = fso.getfile (path); ts = f1.openastextStream (forreading, true); s = ts.readline (); nextcnt = evAl (S ) 1; Document.write ("now count is:" s); ts.close (); ts = f1.openastextStream (forwriting, true); ts.writeline (NEXTCNT); ts.close ();} / / -> </ script> </ head> <body> <script language = "javascript"> <! - getcountfromtxt (); // -> </ script> </ body> </ html> BLOG :</p>
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