分割字符串的方法名是1,连接数组元素的方法名是2。
var arr = new Array(3) arr[0] = "George" arr[1] = "John" arr[2] = "Thomas" document.write(arr.join()) >>George,John,Thomas
var arr = new Array(3) arr[0] = "George" arr[1] = "John" arr[2] = "Thomas" var arr2 = new Array(3) arr2[0] = "James" arr2[1] = "Adrew" arr2[2] = "Martin" document.write(arr.concat(arr2)) >>George,John,Thomas,James,Adrew,Martin
连接数组concat,连接数组元素join,只能这么理解了┑( ̄Д  ̄)┍