join()
ES3+Creates and returns a new string by concatenating all elements in an array.
Syntax
array.join(separator)Parameters
separator string optionalString to separate each element (default: comma)
Return Value
string
A string with all array elements joined
Examples
JavaScript
const words = ['Hello', 'World'];
console.log(words.join(' '));
console.log(words.join('-'));Output:
// 'Hello World'
'Hello-World'