How do I use forEach in TypeScript?

How do I use forEach in TypeScript?

In TypeScript, you can use the forEach method to iterate over arrays. Here's a basic example:

const numbers = [1, 2, 3, 4];
numbers.forEach((num) => {
  console.log(num);
});

This will log each number to the console.

Can I use forEach with objects?

The forEach method is specifically for arrays. However, you can use Object.keys or Object.entries to iterate over an object's properties. For example:

const obj = { a: 1, b: 2 };
Object.keys(obj).forEach((key) => {
  console.log(key, obj[key]);
});

What are the limitations of forEach?

One limitation of forEach is that it does not support breaking out of the loop early. If you need to stop the iteration based on a condition, consider using a regular for loop or the some() method.

Can I use async functions with forEach?

Using async functions directly with forEach won't work as expected because forEach does not wait for promises. Instead, you can use a for...of loop or map with Promise.all for asynchronous operations.