C# background calls foreground JS function method

Summary of some methods of C# backend calling the front desk of other people in the company;

Method 1:

Suppose there are the following functions in the JS script tag of the foreground page:

<script>
function A()
{
alert("hello word!");
}
</script>

Then the background code on this page can be used to call the A() function in the C# background in this way;

First drag and drop an ItlResult control id=itlResult in the foreground;

Then call it like this in the c# background code:

="<script language='javascript'>A();</script>";

The above method applies to the background code that is the background layer of the foreground page;

Method 2:

Still assume that the front desk has an A() function:

Background call:

(this,typeof(UpdatePanel),"","A();",true);

This method is also suitable for the background code even if it is the c# code layer of the front-end page;

Method 3:

The background code calls A(), assuming that the A() function is a function in a certain JS code file.

string lstrScript = "<script language='javascript'>();</script>";
(lstScript);
();

This method can call other functions in the loaded JS.

Summarize

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