myArray.join( [ separator ] ) in ECMAScript 262

Returns a string representation of the array, separated by the delimiter of your choice.


separator String [optional] The string to separate each el
Return Type


Calls the toString() method of each value in the array, and joins them together with the seperator supplied. If separator is omitted, a single comma "," is used. If you want no separator between the values, specify an empty string "".
var words = [ 'The' , 'quick' , 'brown' , 'fox' ];

//The following statements are all true
words.join()        == "The,quick,brown,fox";
words.join(' ')     == "The quick brown fox";
words.join(' :: ')  == "The :: quick :: brown :: fox";
words.join('')      == "Thequickbrownfox";