2. C# calls the client method: (top.window.document: table parent form, if the MainFrame object is in this form, do not add top.window. document) Method in Js:
The following problems to be solved are as follows: 1. How to access C# functions in JavaScript? 2. How to access C# variables in JavaScript? 3. How to access existing variables of JavaScript in C#? 4. How to access JavaScript functions in C#? The answer to question 1 is as follows: Execute the function in the C# code in the javaScript function: Method 1: 1. First create a button, Write the called or processed content into button_click in the background; 2. Write a js function in the foreground with the content document.getElementById("btn1").click(); 3. Call it in the foreground or background js function, which triggers a click event, is equivalent to accessing the backend c# function; Method two: 1. Declare the function as public Backend code (you can also change public to protected) public string ss() { return("a"); } 2. You can call the front-end script in html
Method 3:
"SubmitKeyClick()" id="aaa" type="text"> 〈! --Used to store the function you want to call--〉 In .CS there are: public Page_OnLoad() { if (!Page.IsPost()) {
{ case "enter()": enter() ; //Call this function break; break; default: //Call the default function break; ...For example, calculating a certain value }
Question 2. How to access C# variables in JavaScript? The answer is as follows: Method 1: 1. Access
Method 2: 1. If PUBLIC STRING N is defined in the background; the format for referencing this variable in the front-end js is '' or " "
Method three: 1. Or you can register a script on the page after assigning values to server-side variables "" tmp is a background variable, and then you can directly access temp in js to get the value.
Question 3. How to access existing variables of JavaScript in C#? The answer is as follows: Method 1: 1. Use a static text control to hide the field in the front desk and write the js variable value into it; 2. Use request["id"] in the background to obtain the value; Method 2: You can use cookie or session
Question 4. How to access JavaScript functions in C#? The answer is as follows: Execute javaScript function in c# code: Method one: 1. Page.RegisterStartupScript("ggg"," "); Method two: Use Literal class, and then private void Button2_Click(object sender, System.EventArgs e) { string str; str=" "; //Literal1.Visible=true;
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