How to convert js arrays and strings to each other

1. Convert array to string

You need to concatenate the array elements into a string with a certain character. The sample code is as follows:

var a, b;   
a = new Array(0,1,2,3,4);   
b = a.join("-");

2. Convert string to array

The implementation method is to convert the string by a certain character The characters are cut into several strings and returned in the form of an array. The sample code is as follows:

var s = "abc,abcd,aaa";  
ss = s.split(",");// 在每个逗号(,)处进行分解