The database has the toArray method, how to save the array to the database (toDB)?
Use Table.bulkAdd() or Table.bulkPut(). For example:
var db = new Dexie("testdb");
db.version(1).stores({friends: 'id,name,age'});
db.friends.bulkPut([
{id: 1, name: "Foo", age: 33},
{id: 2, name: "Bar", age: 34}
]).then(result => {
alert ("Successfully stored the array");
}).catch(error => {
alert ("Error: " + error);
});