In general, handling array functions like we’ve seen here, using JavaScript’s built-in functions like map() and filter(), is an excellent application of the power of functional programming.

that's called a multidimensional array. This method accepts an object as a parameter and automatically returns a JSON string. To use stringify(),create a JavaScript object, and then convert it using ...

var it = require('iterator-array'); var array = ['Foo', 'bar', '2000']; it.each(array, function(index) { console.log('item ' + this + ' has index ' + index ...

In JavaScript, though, the same code is perfectly fine: This is because JavaScript scopes your variables to functions and not to if-blocks. But, we can achieve block-like scope through the use of ...