ReactJSJavascript How to remove the duplicate array from multi dimentional array? - Stack Overflow

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I have a multi dimentional array as following. I need to delete the previous row if the value of the particular key value duplicates

[
  {"id":5, "name":"abc"}
  {"id":5, "name":"abcd"}
  {"id":6, "name":"abcde"}
]

I need to get the result as following after deleting the previous row if the value of id already exists.

[
  {"id":5, "name":"abcd"}
  {"id":6, "name":"abcde"}
]

I have a multi dimentional array as following. I need to delete the previous row if the value of the particular key value duplicates

[
  {"id":5, "name":"abc"}
  {"id":5, "name":"abcd"}
  {"id":6, "name":"abcde"}
]

I need to get the result as following after deleting the previous row if the value of id already exists.

[
  {"id":5, "name":"abcd"}
  {"id":6, "name":"abcde"}
]

• javascript
• reactjs

Share Improve this question Follow asked Feb 22, 2018 at 8:05 HareeshHareesh 1,58744 gold badges2121 silver badges4848 bronze badges 4

• 2 Do you want to always remove the previous row or just the existing row that has similar id? – Giovanni Lobitos Commented Feb 22, 2018 at 8:07
• is there only one dupe? do you want only the last one if one or more dupes? what have you tried? – Nina Scholz Commented Feb 22, 2018 at 8:07
• its not clear from your question by what rules/criteria you want to remove a lookalike array (syntactically they're not duplicate). – izengod Commented Feb 22, 2018 at 8:12
• @GiovanniLobitos and NinaScholz It may have more than one array with same id and i always want to remove the previous row and keep the last row. – Hareesh Commented Feb 22, 2018 at 8:53

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2 Answers 2

Sorted by: Reset to default 10

Map can be leveraged to produce a pretty cool one-liner

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