Convert an Array to an Object in JavaScript
Here is a need to convert an array into an object. To do so we are going to use a few of the most preferred methods. First here is a method to know.
Object.assign() method
This method copies the values of all enumerable own properties from source objects(one or more) to a target object.
Syntax:
Object.assign(target, ...sources)
Parameters:
- target: It specifies the target object.
- sources: It specifies the source object(s).
Example-1: This example converts the array to object by using Object.assign() method. For display it, JSON.stringify() method is used.
<!DOCTYPE html><html> <head> <title> JavaScript | Convert Array to Object. </title></head> <body style="text-align:center;" id="body"> <h1 style="color:green;"> GeeksForGeeks </h1> <p id="GFG_UP" style="font-size: 16px;"> </p> <button onclick="gfg_Run()"> Convert </button> <p id="GFG_DOWN" style="color:green; font-size: 20px; font-weight: bold;"> </p> <script> var el_up = document.getElementById("GFG_UP"); var el_down = document.getElementById("GFG_DOWN"); var array = [1, 2, 3, 4]; el_up.innerHTML = "Original Array = [" + array + "]";; function gfg_Run() { el_down.innerHTML = JSON.stringify(Object.assign({}, array)); } </script></body> </html> |
Output:
- Before clicking on the button:
- After clicking on the button:
Example-2: This example converts the array to object by creating a function which adds the array values one by one to the object. For display it, JSON.stringify() method is used.
<!DOCTYPE html><html> <head> <title> JavaScript | Convert Array to Object. </title></head> <body style="text-align:center;" id="body"> <h1 style="color:green;"> GeeksForGeeks </h1> <p id="GFG_UP" style="font-size: 16px; font-weight: bold;"> </p> <button onclick="gfg_Run()"> Convert </button> <p id="GFG_DOWN" style="color:green; font-size: 22px; font-weight: bold;"> </p> <script> var el_up = document.getElementById("GFG_UP"); var el_down = document.getElementById("GFG_DOWN"); var array = ['GFG1', 'GFG2', 'GFG3', 'GFG4']; el_up.innerHTML = "Original Array = [" + array + "]"; function toObject(arr) { var rv = {}; for (var i = 0; i < arr.length; ++i) rv[i] = arr[i]; return rv; } function gfg_Run() { el_down.innerHTML = JSON.stringify(toObject(array)); } </script></body> </html> |
Output:
- Before clicking on the button:
- After clicking on the button:
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