[#BloombergLP-bdljsn-JsonObject-operator_subs-0b7]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::xref:BloombergLP/bdljsn/JsonObject.adoc[JsonObject]::operator[]
:relfileprefix: ../../../
:mrdocs:

Return a reference providing non‐modifiable access to the `Json` object associated with the specified `key` in this `JsonObject`. The behavior is undefined unless `key` is valid UTF‐8 (see `bdlde::Utf8Util::isValid`) and this `JsonObject` already contains a `Json` object associated with `key`.

== Synopsis

Declared in `<bdljsn_json.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdljsn/Json.adoc[Json] const&
operator[](std::string_view const& key) const;
----


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