ArticleZip > Is There Any Way To Rename Js Object Keys Using Underscore Js

Is There Any Way To Rename Js Object Keys Using Underscore Js

When working with JavaScript objects, sometimes you might need to rename keys for better organization or to match a specific naming convention. While JavaScript does not provide a built-in method to directly rename object keys, you can achieve this task using Underscore.js, a popular utility library that provides useful functions for working with arrays, objects, and functions.

To rename keys in a JavaScript object using Underscore.js, you can leverage a combination of existing functions provided by the library. One approach is to create a new object with the desired key names and values by mapping over the original object using the `_.reduce()` function.

Here's an example to help you understand how to rename keys in a JavaScript object using Underscore.js:

Javascript

// Sample JavaScript object with original key names
const originalObject = { FirstName: 'John', LastName: 'Doe', Age: 30 };

// Mapping to create a new object with renamed keys
const updatedObject = _.reduce(originalObject, function(result, value, key) {
  // Define the new key names using an object mapping
  const keyMapping = {
    FirstName: 'first_name',
    LastName: 'last_name',
    Age: 'age'
  };

  // Check if the key exists in the mapping, if not keep the original key
  const newKey = keyMapping[key] ? keyMapping[key] : key;

  // Assign the value to the new key in the updated object
  result[newKey] = value;
  
  return result;
}, {});

// Output the updated object with renamed keys
console.log(updatedObject);

In this example, the `_.reduce()` function iterates over each key-value pair in the original object and uses a key mapping object to match and rename keys as needed. The resulting `updatedObject` will have the keys renamed according to the specified mapping.

Using Underscore.js functions like `_.reduce()` provides a clean and concise way to rename keys in JavaScript objects without altering the original object. You can easily customize the key mapping object to suit your specific renaming requirements.

Remember to include Underscore.js in your project by either downloading the library and including it in your HTML file or installing it via a package manager like npm or yarn.

By following this approach, you can efficiently rename keys in JavaScript objects using Underscore.js, making your code more readable and maintainable. Feel free to experiment with different key mappings and explore other Underscore.js functions for additional functionalities in your projects.

Related posts:

×