This function outputs the value 22. When to use JavaScript’s reducer The reduce method provides a unique way to iterate through items in an array and process them.

Of all the hats JavaScript can wear, its form-processing features are among the most sought and used. Learn how to use JavaScript for form processing, validation, and more.

Unfortunately, this function immediately “forgets” the second value and never does anything with it. Our inner function, the one that currently just returns value1, also needs to be modified ...

There are some advantages to using JavaScript, though, not in the least its popularity and ability to easily connect to third-party services, but also the simple fact that these functions can run ...

Mousetrap is a simple and small (1.5kb) library for handling keyboard shortcuts without the use of jQuery and works in IE 6+, Safari, Firefox, Chrome and possibly Opera (so we’ve heard).