How to get all key in JSON object javascript

Question

document       people          name    Harry Potter    age    18    gender    Male           name    hermione granger    age    18    gender    Female              From this JSON example  I would like to get the keys such as name  age  gender for each people   How to do this

User · Answer

I use Object keys which is built into JavaScript Object  it will return an array of keys from given object MDN Reference  var obj    name   Jeeva   age   22   gender   Male   console log Object keys obj

User · Answer

var jsonData     Name   quot Ricardo Vasquez quot   age   quot 46 quot   Email   quot Rickysoft gmail com quot      for  x in jsonData         console log x   quot    gt   quot   jsonData x        alert x   quot    gt   quot    jsonData x

User · Answer

Try this  var s    name   raul   age   22   gender   Male      var keys          for var k in s  keys push k     Here keys array will return your keys    name    age    gender

User · Answer

var input     document       people          name    Harry Potter    age    18    gender    Male           name    hermione granger    age    18    gender    Female             var keys       for var i   0 i lt input document people length i          Object keys input document people i   forEach function key           if keys indexOf key     -1                        keys push key                       console log keys

User · Answer

ES6 of the day here   const json getAllKeys   data   gt      data reduce  keys  obj    gt        keys concat Object keys obj  filter key   gt          keys indexOf key      -1                      And yes it can be written in very long one line   const json getAllKeys   data   gt  data reduce  keys  obj    gt  keys concat Object keys obj  filter key   gt  keys indexOf key      -1          EDIT  Returns all first order keys if the input is of type array of objects

[javascript] How to get all key in JSON object (javascript)

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