What are some common JavaScript functions and their uses?

What are some common JavaScript functions and their uses?

Some common JavaScript functions include alert(), console.log(), and parseInt(). alert() displays a message, console.log() outputs data to the console, and parseInt() converts strings to integers.

Can you explain how the map() function works?

Certainly! The map() function creates a new array by applying a provided function to each element of the original array. For example, array.map(x => x * 2) doubles each element.

What about the filter() function?

The filter() function creates a new array with all elements that pass the test implemented by the provided function. For instance, array.filter(x => x > 10) returns elements greater than 10.

How do I use the reduce() function?

The reduce() function executes a reducer function on each element of the array, resulting in a single output value. For example, array.reduce((acc, curr) => acc + curr, 0) sums all elements.