js Array join All In One

js Array join All In One

join() === join(',')

join()
join(separator)

join default separator ,

const arr = ['1', '2', '3'];

console.log(arr.join());
// join() === join(',')
console.log(arr.join(','));

console.log(arr.join(''));

console.log(arr.join('-'));

split

split()
split(separator)
split(separator, limit)

demos

split default separator bug ❌

const arr = [[0], [2,3,4], 1, [1, [2,3]]];

arr.toString().split();
// ['0,2,3,4,1,1,2,3']

arr.toString().split(',');
// ['0', '2', '3', '4', '1', '1', '2', '3']

refs

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split

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