作用:空函数。参数被忽略。
可复用的空函数。
其他未使用的入口点(如果有的话)自动映射到空函数,因此这里不需要使用Adapter类。
The other unused entry points, if any, are automatically mapped to empty functions, thus there is no need to use Adapter classes.
在成功完成了的请求上调用abort不起任何作用,并且仅当浏览器收到一个对旧请求的延时响应的情况下,onreadystatechange才被设置为一个空函数。
Calling abort on a successfully completed request won't do anything and onreadystatechange is set to an empty function just in case the browser gets a delayed response for an old request.
在成功完成了的请求上调用abort不起任何作用,并且仅当浏览器收到一个对旧请求的延时响应的情况下,onreadystatechange才被设置为一个空函数。
Calling abort on a successfully completed request won't do anything and onreadystatechange is set to an empty function just in case the browser gets a delayed response for an old request.
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