How do different string methods perform in JavaScript?

How do different string methods perform in JavaScript?

The performance of string methods in JavaScript can vary significantly. For example, using concat() is generally slower than using the + operator for string concatenation.

What about the performance of slice() vs substring()?

slice() is often preferred over substring() because it handles negative indices and is generally more versatile. However, performance differences are usually minimal.

Are there any methods that are particularly slow?

Yes, methods like replace() can be slower, especially with regular expressions. It's best to use them judiciously.

How can I measure the performance of these methods?

You can use the console.time() and console.timeEnd() functions to measure the execution time of different string methods in your code.