2020-02-16 标签:server,application,unavailable,出现,原因,解决方案,小结,错误,提示,如下,实现,代码,web,attempting,access,currently,please,hit,refresh

错误提示如下： 实现代码如下： Server Application Unavailable The web application you are attempting to access on this web server is currently unavailable. Please hi

2020-02-16 标签:jquery,区别,object,oriented,programming,languages,self,a,keyword,used,instance,methods,refer,currently,executing,method,invoked,实现,代码,如下

What is "this"? In many object-oriented programming languages, this (or self) is a keyword which can be used in instance methods to refer to the objec