How to Use a Node.js Variable Inside a JSON Object Statement

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The Problem

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However, this code does not work as intended. The reason is that TYPE is treated as a static key name instead of a variable. As a result, the program looks for json.TYPE, which does not exist. What's the solution?

The Solution

To correctly access JSON properties using a variable, you should use bracket notation. This allows you to retrieve the value associated with a key stored in a variable. Here's how you can modify the myFunction correctly:

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Breakdown of the Code

Bracket Notation: Instead of using dot notation (json.TYPE), we use json[TYPE]. Bracket notation allows you to dynamically access keys of an object using variables, meaning you can substitute TYPE with any valid key string.

Function Invocation: The function is called with myFunction("test1"), which correctly accesses the value of test1 due to bracket notation, thus returning "test1.1" from the array associated with test1.

Full Working Example

Here’s how your complete setup would look with the proper modification:

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[[See Video to Reveal this Text or Code Snippet]]

Conclusion