# How to concatenate arrays

**URL:** <https://discourse.nodered.org/t/how-to-concatenate-arrays/464>\
**Category:** FAQs\
**Created:** [29 May 2018 08:26 UTC](https://discourse.nodered.org/t/how-to-concatenate-arrays/464 "2018-05-29T08:26:45Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [29 May 2018 09:57 UTC](https://discourse.nodered.org/t/how-to-concatenate-arrays/464/4 "2018-05-29T09:57:48Z")

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Do you mean the arrays are coming in on separate messages? If so then you can use the Join node in Manual mode to combine the two message payloads into a single message containing a key/value object and then you can combine the arrays.

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