I Feel Like I Haven’t Learned the split Method Properly

Friends, can you use the split method in JavaScript? I recently realized that I haven't been using it correctly for years, which caused me to get stuck on a problem while solving challenges. Today, I must document this.

Before discussing the problem, let’s review the two basic uses of split.

Character Parameter

The split method is used for string splitting, and the most common form is using a specific character to split the original string. For example:

'as:st:vii'.split(':') 
// ['as', 'st', 'vii']

Using : to split the original string results in an array. This is the usage most people are familiar with.

Regex Parameter

Sometimes splitting isn’t done by a specific character but by a class of characters, like numbers:

'as2st3vii'.split(/\d/)
// ['as', 'st', 'vii']

The regex \d represents all digits, treating any digit as a separator, which is very flexible.

Problem One

So why do I say I haven’t learned it properly? Look at the following code:

`asabstcdvii`.split(/(ab|cd)/)