Interaction between JavaScript and. NET Applications-experiment 1

Interaction between JavaScript and. NET Applications-experiment 1
 
C # Call JavaScript Functions

By integrating JavaScript with. NET, you can enhance the flexibility of. NET applications. The following are several examples to help you learn and exchange.

Currently, there are many JavaScript Engines, including Google Chrome V8, Noesis. Javascript, and Jurassic. ScriptEngine. Result testing is more convenient than Jurassic. ScriptEngine.

The following uses Jurassic. ScriptEngine as an example to describe several small examples.

Example 1: Call JavaScript Functions in C #

(1) create a C # Windows Project

(2) reference the Jurassic Database

After the reference is complete

 

 

(3) add two TextBox and one Button on WinForm.

TextBox is used to input JS Code and display JS computing results

Interface Layout

The corresponding code is as follows:

Note:

Var is a weak type object of C #, which is newly added after. NET3.5. For detailed instructions, go to MSDN.

First, load and execute the JS Code (Evaluate) in TextBox1 through the script engine, and then call the global function (CallGlobalFunction) to make C # Call the program already loaded into the JS engine.

 

JS Code:

Function main (a, B)

{

Return a + B;

}

Running Effect (1)

 

JS Code:

Function add (a, B)
{
Return (a + B) * 2;
}

Function main (a, B)
{
Var x = add (a, B );
 
Return x;
}

Running Effect (2)

 

Summary:

By using JavaScript, the flexibility of C # Windows applications can be enhanced. In actual development, some frequently-needed calculation methods can be encapsulated and put into JavaScript scripts.

Author: ex_net