自己总结：java split 方法，js isNaN方法
String ss = ",sf,dg,ggds,ggg,";String[] arr = ss.split(",");System.out.println(arr);这样split方法结果是 [，sf，dg，ggds，ggg] String ss = "sf,dg,ggds,ggg,";String[] arr = ss.split(",");Syst
