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How to add an element to a JSON object using JavaScript?
In this article, you will understand how to add an element to a JSON object using JavaScript.
JSON object literals are keys and values are separated by a colon surrounded by curly braces {}.
Example 1
In this example, we add an element to a json object using bracket notation,
var jsonObject = {
members:
{
host: "hostName",
viewers:
{
userName1: "userData1",
userName2: "userData2"
}
}
}
console.log("A json object is defined as: ")
console.log(jsonObject);
console.log("
Adding an element using the bracket notation")
jsonObject.members.viewers['userName3'] = 'userData3';
console.log("
A json object after adding a property is: ")
console.log(jsonObject);
Step 1 − Define a json object namely ‘jsonObject’
Step 2 − Define the path to which the new element has to be added.
Step 3 − Add the new element to the defined path using bracket notation.
Step 4 − Display the result.
Example 2
In this example, push an array of elements
var jsonObject = {
members:
{
host: "hostName",
viewers:
{
userName1: "userData1",
userName2: "userData2"
}
}
}
console.log("A json object is defined as: ")
console.log(jsonObject);
console.log("
Adding an element using the dot notation")
jsonObject.members.viewers.userName3 = 'userData3';
console.log("
A json object after adding a property is: ")
console.log(jsonObject);
Explanation
Step 1 − Define a json object namely ‘jsonObject’
Step 2 − Define the path to which the new element has to be added.
Step 3 − Add the new element to the defined path using dot notation.
Step 4 − Display the result.
Updated on: 16-Feb-2023
23K+ Views
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