20 lines
2.1 KiB
Markdown
20 lines
2.1 KiB
Markdown
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## tdweb - TDLib in a browser
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[TDLib](https://github.com/tdlib/td) is a library for building Telegram clients. This is a convenient wrapper for the TDLib in a browser which controls TDLib instance creation,
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handles interaction with the TDLib and manages a filesystem for persistent TDLib data.
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For interaction with the TDLib you need to create an instance of a class `TdClient`, providing a handler for incoming updates and other options if needed.
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After that you can send queries to the TDLib instance using the method `TdClient.send` which returns a Promise object representing the result of the query.
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See a [Getting Started](https://core.telegram.org/tdlib/getting-started) for a description of basic TDLib concepts and a short introduction to TDLib usage.
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See the [td_api.tl](https://github.com/tdlib/td/blob/master/td/generate/scheme/td_api.tl) scheme or
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the automatically generated [HTML documentation](https://core.telegram.org/tdlib/docs/td__api_8h.html) for a list of all available
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TDLib [methods](https://core.telegram.org/tdlib/docs/classtd_1_1td__api_1_1_function.html) and [classes](https://core.telegram.org/tdlib/docs/classtd_1_1td__api_1_1_object.html).
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The JSON representation of TDLib API objects is straightforward: all API objects are represented as JSON objects with the same keys as the API object field names in the
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[td_api.tl](https://github.com/tdlib/td/blob/master/td/generate/scheme/td_api.tl) scheme. Note that in the automatically generated <20>++ documentation all fields has additional terminating underscore
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which shouldn't be used in the JSON interface. The object type name is stored in the special field '@type' which is optional in places where a type is uniquely determined by the context.
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Fields of Bool type are stored as Boolean, fields of int32, int53 and double types are stored as Number, fields of int64 and string types are stored as String,
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fields of bytes type are base64 encoded and then stored as String, fields of vector type are stored as Array.
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You can also add a field '@extra' to any query to TDLib and the response will contain field '@extra' with exactly the same value.
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