The method of conversion between JS array and string

One, array to string

You need to concatenate an array element with a character into a string, the sample code is as follows:

varnew Array (0,1,2,3,4= A.join ("-");

Second, string to array

The implementation method is to cut a string into several strings by one character and return as an array, with the sample code as follows:

var s = "Abc,abcd,aaa"= S.split (","); // decompose at each comma (,). 

The method of conversion between JS array and string