script.js

(function () {

'use strict';

var $ = document.querySelector.bind(document);

// IndexedDB

var db = new PouchDB('mydb-idb');

db.info().then(function (info) {
  $('#idb').innerHTML = '✔ We can use PouchDB with IndexedDB!';
}).catch(function (err) {
  $('#idb').innerHTML = 'Error for IndexedDB';
});

// WebSQL

var websqlDB = new PouchDB('mydb-websql', {adapter: 'websql'});

websqlDB.info().then(function (info) {
  $('#websql').innerHTML = '✔ We can use PouchDB with WebSQL!';
}).catch(function (err) {
  $('#websql').innerHTML = 'Error for WebSQL';
});

// LevelDB

var NodePouchDB = require('pouchdb');

var leveldbDB = new NodePouchDB('mydb-leveldb');

leveldbDB.info().then(function (info) {
  $('#leveldb').innerHTML = '✔ We can use PouchDB with LevelDB!';
}).catch(function (err) {
  $('#leveldb').innerHTML = 'Error for LevelDB';
});

// node-websql

NodePouchDB.plugin(require('pouchdb-adapter-node-websql'));
var sqliteDB = new NodePouchDB('mydb-sqlite', {adapter: 'websql'});

sqliteDB.info().then(function (info) {
  $('#sqlitedb').innerHTML = '✔ We can use PouchDB with node-websql (SQLite)!';
}).catch(function (err) {
  $('#sqlitedb').innerHTML = 'Error for node-websql (SQLite)';
});

})();