Database.js Example File

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 function dbInit()
 {
     var db = LocalStorage.openDatabaseSync("Activity_Tracker_DB", "", "Track exercise", 1000000)
     try {
         db.transaction(function (tx) {
             tx.executeSql('CREATE TABLE IF NOT EXISTS trip_log (date text,trip_desc text,distance numeric)')
         })
     } catch (err) {
         console.log("Error creating table in database: " + err)
     };
 }

 function dbGetHandle()
 {
     try {
         var db = LocalStorage.openDatabaseSync("Activity_Tracker_DB", "",
                                                "Track exercise", 1000000)
     } catch (err) {
         console.log("Error opening database: " + err)
     }
     return db
 }

 function dbInsert(Pdate, Pdesc, Pdistance)
 {
     var db = dbGetHandle()
     var rowid = 0;
     db.transaction(function (tx) {
         tx.executeSql('INSERT INTO trip_log VALUES(?, ?, ?)',
                       [Pdate, Pdesc, Pdistance])
         var result = tx.executeSql('SELECT last_insert_rowid()')
         rowid = result.insertId
     })
     return rowid;
 }

 function dbReadAll()
 {
     var db = dbGetHandle()
     db.transaction(function (tx) {
         var results = tx.executeSql(
                     'SELECT rowid,date,trip_desc,distance FROM trip_log order by rowid desc')
         for (var i = 0; i < results.rows.length; i++) {
             listModel.append({
                                  id: results.rows.item(i).rowid,
                                  checked: " ",
                                  date: results.rows.item(i).date,
                                  trip_desc: results.rows.item(i).trip_desc,
                                  distance: results.rows.item(i).distance
                              })
         }
     })
 }

 function dbUpdate(Pdate, Pdesc, Pdistance, Prowid)
 {
     var db = dbGetHandle()
     db.transaction(function (tx) {
         tx.executeSql(
                     'update trip_log set date=?, trip_desc=?, distance=? where rowid = ?', [Pdate, Pdesc, Pdistance, Prowid])
     })
 }

 function dbDeleteRow(Prowid)
 {
     var db = dbGetHandle()
     db.transaction(function (tx) {
         tx.executeSql('delete from trip_log where rowid = ?', [Prowid])
     })
 }