Install dependencies and build project:

npm run build

Start webpack dev server and open in browser:

npm run start

(on Russian) https://www.metaquotes.net/ru/company/vacancies/tests/javascript

Develop a client for data visualization, which is storing an archive of temperature and precipitation changes for the last 120 years

• HTML5/CSS3
• JavaScript/TypeScript without 3rd party libraries and tools

• Single Page Application
• Source code should be written with the same style and has comments
• Allow to use last JS features (Chrome, Firefox, IE11, Edge)
• Source code shouldn't be obfuscated

• [Done] Application consists of two parts - selection of data type and graphic with visualisation
• [Done] Temperature data should be visualized by default
• [Done] Data should be stored in IndexedDB, in two tables: temperature and precipitation
• [Done] Each data for a day should be stored as an independent object/record in IndexedDb
• [Done] Data should be requested from the server if it doesn't found in IndexedDB
• [Done] Each portion of data (temperature, precipitation) should be requested independently
• [Done] Backend could be implemented as a simple webserver or any bundler (Webpack/Rollup/Vite/Snowpack)
• [Done] All records should be visualised by default (from 1881 to 2006 years, 46020 records)
• [Done] There shouldn't be any calculations on backend
• [Done] It is possible to change visualisation period by the interface
• [Done] Use html canvas element for data visualisation
• While calculation and drawing interface shouldn't be frozen
• Allowed to calculate anything inside workers

• The manifestation of the initiative beyond the main task is welcome
• Speed and performance are the main focuses (interface and data visualisation)