When should I use a for...of loop in JavaScript?

When should I use a for...of loop in JavaScript?

You should use a for...of loop when you want to iterate over iterable objects like arrays, strings, or maps.

Can you give me an example of using for...of with an array?

Sure! Here's an example:

const fruits = ['apple', 'banana', 'cherry'];
for (const fruit of fruits) {
    console.log(fruit);
}

This will log each fruit to the console.

What about using for...of with a string?

You can use it like this:

const word = 'hello';
for (const char of word) {
    console.log(char);
}

This will log each character of the string.

Are there any performance considerations I should be aware of?

Yes, for...of is generally slower than a traditional for loop for large arrays, but it's more readable and easier to use.