Enhanced for loop javascript example

Enterprise 108 Published: 09/14/2024

Enhanced for loop javascript example

I'm happy to help! Here's an enhanced JavaScript example using the for loop:

Enhanced For Loop Example:

Let's say we want to iterate over an array of objects and extract specific properties while performing some logic within each iteration. We can use a traditional for loop or a more modern approach with arrow functions.

Example Scenario:

Suppose we have an array of products with the following structure:

const products = [

{ id: 1, name: 'Apple', price: 0.99 },


{ id: 2, name: 'Banana', price: 0.49 },


{ id: 3, name: 'Orange', price: 0.79 },


// ...


];

We want to find all products with a price above $1.00 and extract their names and IDs.

Traditional for Loop Example:

let result = [];

for (let i = 0; i < products.length; i++) {


const product = products[i];


if (product.price > 1.00) {


result.push({ name: product.name, id: product.id });


}


}


console.log(result); // Output: [{ name: 'Apple', id: 1 }, { name: 'Orange', id: 3 }]

Enhanced for Loop Example with Arrow Functions:

const result = products.filter(product => product.price > 1.00)

.map(product => ({ name: product.name, id: product.id }));


console.log(result); // Output: [{ name: 'Apple', id: 1 }, { name: 'Orange', id: 3 }]

In this enhanced example:

We use the filter() method to create a new array with only products that meet the condition (product.price > 1.00). We then use the map() method to transform each product object into an object containing only the name and id properties. The resulting array is assigned to the result variable.

Benefits of Enhanced for Loop:

Concise code with less repetitive logic Easier maintenance and readability due to the reduced number of lines Flexibility in transforming data with arrow functions

Keep in mind that this example focuses on a specific use case. The choice between traditional and enhanced for loops ultimately depends on the context, complexity, and your personal preference as a developer.

I hope this helps!

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