array join javascript

1var colors = ["red", "blue", "green"];
2var colorsCSV = colors.join(","); //"red,blue,green"

1const elements = ['Sun', 'Earth', 'Moon'];
2
3console.log(elements.join());
4// output: "Sun,Earth,Moon"
5
6console.log(elements.join(''));
7// output: "SunEarthMoon"
8
9console.log(elements.join('-'));
10// output: "Sun-Earth-Moon"

1var array = ["Joe", "Kevin", "Peter"];
2array.join(); // "Joe,Kevin,Peter"
3array.join("-"); // "Joe-Kevin-Peter"
4array.join(""); // "JoeKevinPeter"
5array.join(". "); // "Joe. Kevin. Peter"

1//turns array to string
2
3const elements = ['Fire', 'Air', 'Water'];
4
5console.log(elements.join());
6// expected output: "Fire,Air,Water"
7
8console.log(elements.join(''));
9// expected output: "FireAirWater"
10
11console.log(elements.join('-'));
12// expected output: "Fire-Air-Water"
13

1var a = ['Wind', 'Water', 'Fire'];
2a.join();      // 'Wind,Water,Fire'
3a.join(', ');  // 'Wind, Water, Fire'
4a.join(' + '); // 'Wind + Water + Fire'
5a.join('');    // 'WindWaterFire'

1const cities = ['London', 'Paris', 'Tokyo'];
2const joinedCities = cities.join('-');
3
4console.log(joinedCities); // London-Paris-Tokyo
5