Application object application
1. Use Application object to save information
(1) Use Application object to save information
Application("key name") = value
or Application("key name", value)
(2) Obtain Application object information
Variable name = Application("key name")
Or: variable name = ("key name")
Or: variable name = ("key name")
(3) Update the value of the Application object
("key name", value)
(4) Delete a key
("key name", value)
(5) Delete all keys
()
or()
Summarize the characteristics of Application:
· Physical location of storage: server memory.
· Storage type limitation: any type.
·Scope of status usage: the entire application.
· Storage size limit: any size.
Lifecycle: Created at the beginning of the application (to be precise, it is created when the user requests a certain URL for the first time), and destroyed at the end of the application.
· Security and performance: Data is always stored on the server side, which is relatively safe, but it is not easy to store too much data.
· Advantages and disadvantages and precautions: The data is retrieved quickly, but lacks a self-management mechanism, and the data will not be automatically released.
1. Use Application object to save information
(1) Use Application object to save information
Application("key name") = value
or Application("key name", value)
(2) Obtain Application object information
Variable name = Application("key name")
Or: variable name = ("key name")
Or: variable name = ("key name")
(3) Update the value of the Application object
("key name", value)
(4) Delete a key
("key name", value)
(5) Delete all keys
()
or()
Summarize the characteristics of Application:
· Physical location of storage: server memory.
· Storage type limitation: any type.
·Scope of status usage: the entire application.
· Storage size limit: any size.
Lifecycle: Created at the beginning of the application (to be precise, it is created when the user requests a certain URL for the first time), and destroyed at the end of the application.
· Security and performance: Data is always stored on the server side, which is relatively safe, but it is not easy to store too much data.
· Advantages and disadvantages and precautions: The data is retrieved quickly, but lacks a self-management mechanism, and the data will not be automatically released.