Connecting Data

Overview

The library is meant to be used on your own site, with your own source of market data. It does NOT include any market data. If you want to display TradingView market data, please check our widgets.

Unlike simple charts, the primary aim of which is just displaying data, the library gives users control over the chart. Thus, market data connection API is designed in such a way, that all interactions (data requests, symbol information requests and symbol search) are initiated by the user.

Datafeed API

The market data connection API (Datafeed API) is a set of methods that must be implemented in JavaScript.

All these methods are called by the library as needed.

The library expects to get an implementation of the Datafeed API in the datafeed field of the constructor.

UDF

If you don’t have sufficient JavaScript knowledge, or if you don’t yet have a Web-based server API that you can fetch data from, then you can use a ready-made UDF adapter that implements the Datafeed API and makes simple HTTP(S) requests at the specified URL in a specific format. This adapter does not support data streaming out of the box (but it still can be added there). Do not use UDF with data grouping (see supports_group_request) if your backend has more than 100 symbols.

Also, the UDF adapter can be used as an example implementation of the Datafeed API. You can copy its code 🔐 (access is restricted) and start editing it.

Go ahead

Start implementing Datafeed API if you have an existing Web API

Start with a predefined UDF adapter and implement a server-side API