LogicalDK | JAVASCRIPT - How reviver function works with JSON.parse()

Sometimes we need to modify the JSON String received from the server side. The best way of doing it to use “reviver” function with JSON.parse.

This blog will guide you how to modify JSON String with JSON.parse function.

The JSON.parse function parses a string to a JSON also it provides an optional second argument a “reviver” function that can be used to mold or modify the values being parsed. In JavaScript terms, the reviver function is a callback which will be invoked in turn on each of the property values in the JSON data being parsed. It has two arguments: key and value. You can delete a key-value pair from JSON by returning undefined, or the value can be modified based on your need, or the value can be returned unchanged.

Let’s take a simple example to remove a key-value pair and modify the value of a key from JSON.

Hope this helps