The successfunction will get passed a single parameter of type Position.
成功函数将通过一个单独的position类型的参数传递。
2
The query is executed with a success handler and an error handler function.
通过成功处理程序和错误处理程序函数执行查询。
3
One way to determine the success or failure of the function testing is by counting the line commands that have failed, that is, that have a return code different than 0.