Added comments, incDec function

scoreboard/public/javascripts/admin.js

@@ -50,6 +50,7 @@ async function timerStart() {
     }
 }
 
+// Request to pause the timer
 async function timerPause() {
     const response = await fetch("/admin/timerPause");      // Call API Endpoint /admin/timerStart
     if(response.status == 200) {
@@ -63,6 +64,7 @@ async function timerPause() {
     }
 }
 
+// Request to reset the timer with the specified time
 async function timerReset() {
     let newDuration = document.getElementById("timerSelectDuration").value;
     const response = await fetch("/admin/timerReset", {     // Call API Endpoint /admin/timerStart with selected new duration in seconds
@@ -72,7 +74,19 @@ async function timerReset() {
     });
     const data = await response.json();                     // Wait for asyncronous transfer to complete and parse json (which got received by backend)
     console.log(data);                                      // Print received data
-    updateFrontend(data);                                   // Update admin frontend with received values
+    updateTimerFrontend(data);                              // Update admin frontend with received values
+}
+
+// Request to increase or decrease the timer depending on passed value in seconds
+async function timerIncDec(value) {
+    const response = await fetch("/admin/timerIncDec", {    // Call API Endpoint /admin/timerIncDec with value in seconds to increase or decrease the timer
+        method: 'POST',
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({value: value})
+    });
+    const data = await response.json();                     // Wait for asyncronous transfer to complete and parse json (which got received by backend)
+    console.log(data);                                      // Print received data
+    updateTimerFrontend(data);                              // Update admin frontend with received values
 }
 
 // Scoreboardfunctions