Learning: Interaction Between JavaScript and the background

1. Javascript Function execution C # CodeFunctions in:

 

Method 1:

1Create a button to write the called or processed content in the backgroundButton_clickMedium;

 

2WriteJSFunction. The content isDocument. getelementbyid ("btn1"). Click ();

 

3, Called at the front end or back endJSFunction, ExcitationClickEvent, equivalent to accessing the backgroundC #Function;

 

 

2. How Javascript Access C # Variable ?

 

The answer is as follows:

 

Method 1:

1Hide domain access on the page

 

Method 2:

1,As defined in the backgroundPublic String N;

2,Front-endJSTo reference the variable in the format''<%=N%>''Or"+<%=N%>+"

 

 

3. How C # Medium Access Javascript Existing variable ?

 

The answer is as follows:

 

Method 1:

1, The foreground uses static text control to hide the domainJSWrite the variable value into it;

 

2For background useRequest ["ID"]To obtain the value;

 

Method 2:

AvailableCookieOrSession

 

4. How C # Medium Access Javascript Function ?

 

The answer is as follows:

 

C #Code ExecutionJavascriptFunction:

 

Method 1:

1,Page. registerstartupscript ("ggg ","");

 

 

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