JavaScript’s Dream Team: in praise of split and join

JavaScript is blessed with two remarkably powerful yet under-appreciated methods: split and join act as perfect counterparts. Their symmetry allows JavaScript’s array and string types to enjoy a unique coupling: arrays can easily be serialized to strings and back again, a feature we can leverage to good effect. In a moment we’ll explore some interesting applications – but first some introductions:

The Secret Life of JavaScript Primitives

You may not know it but, in JavaScript, whenever you interact with string, number or boolean primitives you enter a hidden world of object shadows and coercion. So dust off your Sherlock Holmes outfit and read on…