How to insert arduino variable value in HTML table while developing web page

Hi,
I'm working on Arduino WiFi MKR 1010, I want to get a value from a table on my webpage to toogle a led (pin 6).

Can someone help me please ?
this is my code:

#include <SPI.h>
#include <WiFiNINA.h>
#include <Servo.h> 



char ssid[] = "******";             
char pass[] = "******";    
int keyIndex = 0;                 

int status = WL_IDLE_STATUS;      
WiFiServer server(80);            

//special characters
char quote = '"';
char slash = '/';

Servo myservo;

void setup() {
 Serial.begin(9600);      // initialize serial communication
 pinMode(6, OUTPUT);      // set the LED pin mode
 pinMode(7, OUTPUT);      
 myservo.attach(9);      
 myservo.write(45);

 // check for the presence of the shield:
 if (WiFi.status() == WL_NO_SHIELD) {
   Serial.println("WiFi shield not present");
   while (true);       // don't continue
 }

 // attempt to connect to WiFi network:
 while ( status != WL_CONNECTED) {
   Serial.print("Attempting to connect to Network named: ");
   Serial.println(ssid);                   // print the network name (SSID);

   // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
   status = WiFi.begin(ssid, pass);
   // wait 10 seconds for connection:
   delay(10000);
 }





 
 server.begin();                           // start the web server on port 80
 printWiFiStatus();                        // you're connected now, so print out the status
}


void loop() {

 // attempt to connect to WiFi network:
 while ( status != WL_CONNECTED) {
   Serial.print("Attempting to connect to Network named: ");
   Serial.println(ssid);                   // print the network name (SSID);


   status = WiFi.begin(ssid, pass);

   delay(10000);
 }

 WiFiClient client = server.available();   // listen for incoming clients

 if (client) {                             
   Serial.println("new client");           
   String currentLine = "";                
   while (client.connected()) {            
     if (client.available()) {             
       char c = client.read();             
       Serial.write(c);                    
       if (c == '\n') {                    


          
        
         if (currentLine.length() == 0) {



           
           client.println("HTTP/1.1 200 OK");
           client.println("Content-type:text/html");
           client.println("Content-Type: application/x-javascript");

           client.println();

           client.println("<!DOCTYPE HTML>");
           client.print("<head>");






          
           client.print("</head>");
           client.print("<body>");
           client.println("<center>

<div class='container'><h1>CONTROL YOUR ARDUINO<h1/></div></center>");

           client.print("<center><h2> LED Rouge");
           client.println("</h2>");
           client.println("<center><div class='container'><left><button class='on' type='submit' value='ON' onmousedown=location.href='/H\'>ON</button>");
           client.println("<button class='off' type='submit' value='OFF' onmousedown=location.href='/L\'>OFF</button></div>
");

           client.print("<h2> LED Verte");
           client.println("</h2>");
           client.println("<center><div class='container'><left><button class='on' type='submit' value='ON' onmousedown=location.href='/X\'>ON</button>");
           client.println("<button class='off' type='submit' value='OFF' onmousedown=location.href='/P\'>OFF</button></div>
");
          
           
       
         
           client.print("<from action='/get>'>");
           client.print("<input type='number' name=r id = 'input'> Clignotant LED 
");   
           client.println("<button class='submit' type='submit' value='set' onmousedown=location.href='/T\' onclick='getInputValue();'>Get Value</button></div>
");
           

           client.print("<script>");
           client.print("funtion getInputValue()");
           client.println("{");
           client.println("var inputVal = document.getElementById('input').value");
           client.println("alert(inputVal)");
           client.println("}</script>");




client.print("<script>function save(tableID)");
client.print("{");
client.print("var a = document.getElementById(tableID).value;");
client.print("var x = alert(col[0].firstChild.innerHTML);");
client.print("} </script>");



client.print("<h2>Choisir_LED</h2>");
client.print("<input type='button' name='btnSave' value='Save' onclick='save('dataTable')' />");
client.print("<input type='button' value='Add Row' onclick='addRow('dataTable')' />");
client.print("<input type='button' value='Delete Row' onclick='deleteRow('dataTable')' />");


client.print("<table id='table1' width='400px' border='0' >");
    client.print("<tr>");
    client.print("<td style='padding-left:30px'>Nom de la LED</td>");
    client.print("<td style='padding-left:120px'>Nb clignant</td>");
    
    client.print("</tr>");
    client.print("<table id='dataTable' width='350px' border='1'>");
    client.print("<tr>");
    client.print("<td><input type='checkbox' name='chk'/></td>");
    client.print("<td><input type='text' name='txt1' /></td>");
    client.print("<td><input type='text' name='txt'/></td>");
           


client.print(" </tr> </table> </table>");

         
         

         

  
           client.println("</body>");
           client.println("</html>");


           client.println();

           break;
         }
         else {      
           currentLine = "";
         }
       }
       else if (c != '\r') {    // if you got anything else but a carriage return character,
         currentLine += c;      // add it to the end of the currentLine
       }

       
       if (currentLine.endsWith("GET /X")) {



        for(int i= 0 ; i< parsInt(a) ; i++){
         digitalWrite(6, HIGH);                // GET /L turns the pin 6 LED off
         delay(500);
         digitalWrite(6, LOW);
         delay(500);
        }
         
       }

       
     }
   }
   // close the connection:
   client.stop();
   Serial.println("client disonnected");
 }
}

void printWiFiStatus() {
 // print the SSID of the network you're attached to:
 Serial.print("SSID: ");
 Serial.println(WiFi.SSID());

 // print your WiFi shield's IP address:
 IPAddress ip = WiFi.localIP();
 Serial.print("IP Address: ");
 Serial.println(ip);

 // print the received signal strength:
 long rssi = WiFi.RSSI();
 Serial.print("signal strength (RSSI):");
 Serial.print(rssi);
 Serial.println(" dBm");
 // print where to go in a browser:
 Serial.print("To see this page in action, open a browser to http://");
 Serial.println(ip);
}

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