Concatenate two JSON objects

Question

I have two JSON objects with the same structure and I want to concat them together using Javascript  Is there an easy way to do this

User · Answer

You can use Object assign   method  The Object assign   method is used to copy the values of all enumerable own properties from one or more source objects to a target object  It will return the target object  1   var o1     a  1    o2     b  2    o3     c  3     var obj   Object assign o1  o2  o3   console log obj        a  1  b  2  c  3

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You can use jquery extend method   Example   o1     foo   bar    data    id   1     o2     x   y    sum     extend o1  o2     Result   sum     foo   bar    data    id   1     x   y

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One solution is to use a list array   var first json     name   joe    age  27   var second json     name   james    age  32    var jsons   new Array    jsons push first json   jsons push second json     Result  jsons           name   joe    age  27         name   james    age  32

User · Answer

okay  you can do this in one line of code  you ll need json2 js for this  you probably already have    the two json objects here are unparsed strings   json1       foo   bar     bar   foo     name   craig       json2       foo   baz     bar   fob     name   george       concattedjson   JSON stringify JSON parse json1  concat JSON parse json2

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If you d rather copy the properties   var json1     value1   1   value2   2     var json2     value2   4   value3   3       function jsonConcat o1  o2     for  var key in o2      o1 key    o2 key       return o1     var output       output   jsonConcat output  json1   output   jsonConcat output  json2     Output of above code is  value1   1   value2   4   value3   3

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If you d rather copy the properties   var json1     value1   1   value2   2     var json2     value2   4   value3   3       function jsonConcat o1  o2     for  var key in o2      o1 key    o2 key       return o1     var output       output   jsonConcat output  json1   output   jsonConcat output  json2     Output of above code is  value1   1   value2   4   value3   3

User · Answer

The actual way is using JS Object assign    Object assign target     sources    MDN Link  There is another object spread operator which is proposed for ES7 and can be used with Babel plugins    Obj       sourceObj1     sourceObj2

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I use   let x     a  1  b  2  c  3    let y    c  4  d  5  e  6    let z   Object assign x  y   console log z      OUTPUTS    a 1  b 2  c 4  d 5  e 6     From here

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var baseArrayOfJsonObjects            for  var i 0  i lt arrayOfJsonObjectsFromAjax length  i          baseArrayOfJsonObjects push arrayOfJsonObjectsFromAjax i

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okay  you can do this in one line of code  you ll need json2 js for this  you probably already have    the two json objects here are unparsed strings   json1       foo   bar     bar   foo     name   craig       json2       foo   baz     bar   fob     name   george       concattedjson   JSON stringify JSON parse json1  concat JSON parse json2

User · Answer

Based on your description in the comments  you d simply do an array concat   var jsonArray1      name    doug    id  5     name    dofug    id  23    var jsonArray2      name    goud    id  1     name    doaaug    id  52    jsonArray1   jsonArray1 concat jsonArray2      jsonArray1      name    doug    id  5     name    dofug    id  23        name    goud    id  1     name    doaaug    id  52

User · Answer

One solution is to use a list array   var first json     name   joe    age  27   var second json     name   james    age  32    var jsons   new Array    jsons push first json   jsons push second json     Result  jsons           name   joe    age  27         name   james    age  32

User · Answer

var baseArrayOfJsonObjects            for  var i 0  i lt arrayOfJsonObjectsFromAjax length  i          baseArrayOfJsonObjects push arrayOfJsonObjectsFromAjax i

User · Answer

Based on your description in the comments  you d simply do an array concat   var jsonArray1      name    doug    id  5     name    dofug    id  23    var jsonArray2      name    goud    id  1     name    doaaug    id  52    jsonArray1   jsonArray1 concat jsonArray2      jsonArray1      name    doug    id  5     name    dofug    id  23        name    goud    id  1     name    doaaug    id  52

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I use   let jsonFile           let schemaJson           schemaJson  properties             schemaJson  properties    key      value   jsonFile concat schemaJson

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You can use jquery extend method   Example   o1     foo   bar    data    id   1     o2     x   y    sum     extend o1  o2     Result   sum     foo   bar    data    id   1     x   y

User · Answer

okay  you can do this in one line of code  you ll need json2 js for this  you probably already have    the two json objects here are unparsed strings   json1       foo   bar     bar   foo     name   craig       json2       foo   baz     bar   fob     name   george       concattedjson   JSON stringify JSON parse json1  concat JSON parse json2

User · Answer

If you d rather copy the properties   var json1     value1   1   value2   2     var json2     value2   4   value3   3       function jsonConcat o1  o2     for  var key in o2      o1 key    o2 key       return o1     var output       output   jsonConcat output  json1   output   jsonConcat output  json2     Output of above code is  value1   1   value2   4   value3   3

User · Answer

If you d rather copy the properties   var json1     value1   1   value2   2     var json2     value2   4   value3   3       function jsonConcat o1  o2     for  var key in o2      o1 key    o2 key       return o1     var output       output   jsonConcat output  json1   output   jsonConcat output  json2     Output of above code is  value1   1   value2   4   value3   3

User · Answer

You can use Object assign   method  The Object assign   method is used to copy the values of all enumerable own properties from one or more source objects to a target object  It will return the target object  1   var o1     a  1    o2     b  2    o3     c  3     var obj   Object assign o1  o2  o3   console log obj        a  1  b  2  c  3

User · Answer

if using TypeScript  you can use the spread operator        var json       json1    json2

User · Answer

Based on your description in the comments  you d simply do an array concat   var jsonArray1      name    doug    id  5     name    dofug    id  23    var jsonArray2      name    goud    id  1     name    doaaug    id  52    jsonArray1   jsonArray1 concat jsonArray2      jsonArray1      name    doug    id  5     name    dofug    id  23        name    goud    id  1     name    doaaug    id  52

User · Answer

if using TypeScript  you can use the spread operator        var json       json1    json2

User · Answer

I use   let jsonFile           let schemaJson           schemaJson  properties             schemaJson  properties    key      value   jsonFile concat schemaJson

User · Answer

Based on your description in the comments  you d simply do an array concat   var jsonArray1      name    doug    id  5     name    dofug    id  23    var jsonArray2      name    goud    id  1     name    doaaug    id  52    jsonArray1   jsonArray1 concat jsonArray2      jsonArray1      name    doug    id  5     name    dofug    id  23        name    goud    id  1     name    doaaug    id  52

User · Answer

One solution is to use a list array   var first json     name   joe    age  27   var second json     name   james    age  32    var jsons   new Array    jsons push first json   jsons push second json     Result  jsons           name   joe    age  27         name   james    age  32

User · Answer

okay  you can do this in one line of code  you ll need json2 js for this  you probably already have    the two json objects here are unparsed strings   json1       foo   bar     bar   foo     name   craig       json2       foo   baz     bar   fob     name   george       concattedjson   JSON stringify JSON parse json1  concat JSON parse json2

User · Answer

The actual way is using JS Object assign    Object assign target     sources    MDN Link  There is another object spread operator which is proposed for ES7 and can be used with Babel plugins    Obj       sourceObj1     sourceObj2

User · Answer

Just try this  using underscore  var json1      value1   1   value2   2      value1   3   value2   4      var json2      value3   a   value4   b      value3   c   value4   d      var resultArray       json1 forEach function obj  index     resultArray push   extend obj   json2 index          console log  Result Array   resultArray     Result

User · Answer

Just try this  using underscore  var json1      value1   1   value2   2      value1   3   value2   4      var json2      value3   a   value4   b      value3   c   value4   d      var resultArray       json1 forEach function obj  index     resultArray push   extend obj   json2 index          console log  Result Array   resultArray     Result

User · Answer

I use   let x     a  1  b  2  c  3    let y    c  4  d  5  e  6    let z   Object assign x  y   console log z      OUTPUTS    a 1  b 2  c 4  d 5  e 6     From here

User · Answer

var baseArrayOfJsonObjects            for  var i 0  i lt arrayOfJsonObjectsFromAjax length  i          baseArrayOfJsonObjects push arrayOfJsonObjectsFromAjax i

User · Answer

One solution is to use a list array   var first json     name   joe    age  27   var second json     name   james    age  32    var jsons   new Array    jsons push first json   jsons push second json     Result  jsons           name   joe    age  27         name   james    age  32

User · Answer

var baseArrayOfJsonObjects            for  var i 0  i lt arrayOfJsonObjectsFromAjax length  i          baseArrayOfJsonObjects push arrayOfJsonObjectsFromAjax i

[javascript] Concatenate two JSON objects

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