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How to add a property to a JavaScript object using a variable as the name?
In this article, you will understand how to add a property to a JavaScript object using a variable as the name. Adding property to an object can be achieved by two methods. The first is the dot (.) notation and the second is using the brackets([]).
Example 1
In this example, let’s use the dot (.) notation.
var inputObject = {a: "value1"};
console.log("An object is created with properties: ", inputObject)
inputObject.b = "value2";
console.log("
After adding properties, the object now contains: ", inputObject)
console.log(inputObject)
Explanation
Step 1 − Define an object namely inputObject.
Step 2 − Add an additional property to the object using dot notation.
Step 3 − Display the values.
Example 2
In this example,
var inputObject = {a: "value1"};
console.log("An object is created with properties: ", inputObject)
inputObject['c'] = "value3"
console.log("
After adding properties, the object now contains: ", inputObject)
console.log(inputObject)
Explanation
Step 1 − Define an object namely inputObject.
Step 2 − Add an additional property to the object using bracket notation.
Step 3 − Display the values.
Updated on: 16-Feb-2023
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