wangmusen79的专栏

1、document.write 和document.writeln的区别document.write("hello word!");document.writeln("hello word!");输出结果是：document.writeln输出后换行2、注释避免使用块注释/**/，而用//注释代替因为在JavaScript中，字符对也可能出现在正则表达式字

if(number > 0)  {enabled = true;} else {enabled = false;}可以简化成enabled = number > 0

今天访问本地竟然报错：XMLHttpRequest cannot loadhttp://localhost:8080/bss_server/isLoginBss?userName=AMCTJ013. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is