Converting from strings and arrays vice verse

1. Easy Method but with restrictions
   toString() always uses a comma.

const dogNames = ['Rocket','Flash','Bella','Slugger'];
dogNames.toString(); // Rocket,Flash,Bella,Slugger
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2. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
   join() method
   Can specify different separators

const elements = ['Fire', 'Air', 'Water'];

console.log(elements.join('-'));
// expected output: "Fire-Air-Water"
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To do this, we can use the split() method.

• single parameter, the character you want to separate the string at,
• returns the substrings between the separator as items in an array.

const data = 'Manchester,London,Liverpool,Birmingham,Leeds,Carlisle';
const cities = data.split(',');
// ['Manchester', 'London', 'Liverpool', 'Birmingham', 'Leeds', 'Carlisle']
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