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How to add JSON object to existing JSON array in JavaScript | Example

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Use push() method to add JSON object to existing JSON array in JavaScript. Just do it with proper array of objects.

arryObj.push(jsonObj);

Add JSON object to existing JSON array in JavaScript

Simple example code pushes the object to Json Array.

<!DOCTYPE html>
<html>
<body>

  <script type="text/javascript">
    favorites = [{
      "artist" : "Mike king",    
      "song_name" : "Mild Songs"  
    }];


    var myObj = {
      "artist" : "Johny steve",    
      "song_name" : "Rock Songs"  
    };

    favorites.push(myObj);

    console.log(favorites);
  </script>

</body>
</html>

Output:

How to add JSON object to existing JSON array in JavaScript

How to append an array to existing JSON JavaScript?

Answer: You have to create an object to add properties:

var myobj = {name: "Julia", birthdate: "xxxx"};

myobj.movies = []; 
myobj.movies.push({title: "movie1", rating: 5}); 
myobj.movies.push({title: "movie2", rating: 3}); 

How to push JSON object into an array using JavaScript?

Answer: If there is a single object and you want to push the whole object into an array then you do simply push the object.

var feed = {created_at: "2017-03-14T01:00:32Z", entry_id: 33358, field1: "4", field2: "4", field3: "0"};

var data = [];
data.push(feed);

console.log(data);

If you have multiple objects then do iterate the object.

var my_json = {created_at: "2017-03-14T01:00:32Z", entry_id: 33358, field1: "4", field2: "4", field3: "0"};

var data = [];
for(var i in my_json) {
    data.push(my_json[i]);
}

console.log(data);

Do comment if you have any doubts or suggestions on this JS JSON topic.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version

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