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How to convert JSON string to array of JSON objects using JavaScript ?

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  • Difficulty Level : Easy
  • Last Updated : 10 Nov, 2022
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Given a JSON string and the task is to convert the JSON string to an array of JSON objects. This array contains the values of JavaScript objects obtained from the JSON string with the help of JavaScript. There are two approaches to solve this problem which are discussed below: 

Approach 1: First convert the JSON string to the JavaScript object using JSON.Parse() method and then take out the values of the object and push them into the array using push() method.

Example: 

html




<!DOCTYPE HTML>
<html>
 
<head>
    <title>
        How to convert JSON string to array
        of JSON objects using JavaScript?
    </title>
</head>
 
<body style = "text-align:center;">
     
    <h1 style = "color:green;" >
        GeeksForGeeks
    </h1>
     
    <p id = "GFG_UP"></p>
     
    <button onclick = "myGFG()">
        Click Here
    </button>
     
    <p id = "GFG_DOWN"></p>
     
    <script>
        var up = document.getElementById("GFG_UP");
         
        var JS_Obj =
        '{"prop_1":"val_1", "prop_2":"val_2", "prop_3" : "val_3"}';
         
        up.innerHTML = "JSON string - '" + JS_Obj + "'";
         
        var down = document.getElementById("GFG_DOWN");
         
        function myGFG() {
            var obj = JSON.parse(JS_Obj);
            var res = [];
             
            for(var i in obj)
                res.push(obj[i]);
             
            down.innerHTML = "Array of values - ["
                            + res + "]";
        }
    </script>
</body>
 
</html>

Output:

                                                                                           

 

Approach 2: This approach is also the same but uses a different method. Convert the JSON string to the JavaScript object using eval() method and then take out the values of the object and push them to the array using push() method.

Example: 

html




<!DOCTYPE HTML>
<html>
 
<head>
    <title>
        How to convert JSON string to array
        of JSON objects using JavaScript?
    </title>
</head>
 
<body style = "text-align:center;">
     
    <h1 style = "color:green;" >
        GeeksForGeeks
    </h1>
     
    <p id = "GFG_UP"></p>
     
    <button onclick = "myGFG()">
        Click Here
    </button>
     
    <p id = "GFG_DOWN"></p>
     
    <script>
        var up = document.getElementById("GFG_UP");
         
        var JS_Obj =
        '{"prop_1":"val_1", "prop_2":"val_2", "prop_3" : "val_3"}';
         
        up.innerHTML = "JSON string - '" + JS_Obj + "'";
         
        var down = document.getElementById("GFG_DOWN");
         
        function myGFG() {
            var obj = eval('(' + JS_Obj + ')');
            var res = [];
             
            for(var i in obj)
                res.push(obj[i]);
             
            down.innerHTML = "Array of values - ["
                            + res + "]";
        }
    </script>
</body>
 
</html>

Output:

 

JavaScript is best known for web page development but it is also used in a variety of non-browser environments. You can learn JavaScript from the ground up by following this JavaScript Tutorial and JavaScript Examples.


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