# Where is documentation for the C++ J JSON object functions?

**URL:** <https://discuss.blues.com/t/where-is-documentation-for-the-c-j-json-object-functions/1138>\
**Category:** Notecard API\
**Created:** [December 18, 2022, 3:57pm UTC](https://discuss.blues.com/t/where-is-documentation-for-the-c-j-json-object-functions/1138 "2022-12-18T15:57:42Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![markwkiehl](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/markwkiehl/32/622_2.png) [@markwkiehl](https://discuss.blues.com/u/markwkiehl)\
**Post date:** [December 18, 2022, 3:57pm UTC](https://discuss.blues.com/t/where-is-documentation-for-the-c-j-json-object-functions/1138/1 "2022-12-18T15:57:42Z")

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Where can I see the details on all of the J JSON object functions. Ex.

JAddBoolToObject  
JAddNumberToObject  
JAddStringToObject  
JAddObjectToObject  
JAddArrayToObject  
JAddItemToArray  
etc.

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**Author:** ![tjvantoll](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/tjvantoll/32/231_2.png) [@tjvantoll](https://discuss.blues.com/u/tjvantoll)\
**Post date:** [December 19, 2022, 1:50pm UTC](https://discuss.blues.com/t/where-is-documentation-for-the-c-j-json-object-functions/1138/2 "2022-12-19T13:50:50Z")

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Hi @markwkiehl,

You can find details on those functions in this section of our Arduino library’s documentation: [Arduino Library - Blues Wireless Developers](https://dev.blues.io/tools-and-sdks/libraries/arduino-library/#json-handling).

TJ

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**Author:** ![markwkiehl](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/markwkiehl/32/622_2.png) [@markwkiehl](https://discuss.blues.com/u/markwkiehl)\
**Post date:** [December 19, 2022, 7:25pm UTC](https://discuss.blues.com/t/where-is-documentation-for-the-c-j-json-object-functions/1138/3 "2022-12-19T19:25:56Z")

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That page doesn’t provide details. I want to know the data type returned from the function, and the data type for arguments. I ran into trouble with the difference between a String and a string for example.

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**Author:** ![tjvantoll](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/tjvantoll/32/231_2.png) [@tjvantoll](https://discuss.blues.com/u/tjvantoll)\
**Post date:** [December 19, 2022, 7:31pm UTC](https://discuss.blues.com/t/where-is-documentation-for-the-c-j-json-object-functions/1138/4 "2022-12-19T19:31:31Z")

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Ah, gotcha. At the moment we don’t have API documentation available for those methods. It’s on our backlog, but in the meantime the code is open source, and most of the functions are defined here: [note-c/n\_cjson\_helpers.c at master · blues/note-c · GitHub](https://github.com/blues/note-c/blob/master/n_cjson_helpers.c).

TJ

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**Author:** ![markwkiehl](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/markwkiehl/32/622_2.png) [@markwkiehl](https://discuss.blues.com/u/markwkiehl)\
**Post date:** [December 19, 2022, 8:44pm UTC](https://discuss.blues.com/t/where-is-documentation-for-the-c-j-json-object-functions/1138/5 "2022-12-19T20:44:45Z")

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That work perfectly. Thank you.