Completed the tasks in file alarmclock.js , created 3 different functions in order to complete the task

Author: davappler

Week-3/Homework/mandatory/1-alarmclock/alarmclock.js

@@ -1,4 +1,59 @@
-function setAlarm() {}
+function setAlarm() {
+
+  let setAlarmbutton=document.querySelector("#set");
+  let alarmInputValue=document.querySelector("#alarmSet").value;// this is value in box
+  setAlarmbutton.addEventListener("click",alarmOn(alarmInputValue));
+}
+
+function alarmOn(inputValue)
+{
+  let time=setInterval(function()
+  {
+    if(inputValue===0)
+    {
+      clearInterval(time);
+      playAlarm();
+    }
+    updateScreen(inputValue);
+    inputValue--;
+  },1000)
+}
+
+function updateScreen(newValue){
+  let timeRemaining     =document.querySelector("#timeRemaining"); // here we are taking the tag by id
+  textTime              =timeRemaining.textContent; //  refering to the tags textcontent so that we can update later.
+  let replacementTime   = convertTime(newValue); // this is the variable which will contain the final value in minutes and seconds.
+  textTime              = textTime.slice(0,15) + replacementTime; // updating the string to put it as textcontent on the page.
+  
+  timeRemaining.textContent =textTime;
+}
+
+
+// This will convert input time (initially in seconds) into minutes and seconds format.
+function convertTime(inputValue) 
+{
+  var minutes=0;
+  var seconds =0;
+
+  if(inputValue<=60){
+    minutes=0;
+    seconds=inputValue;
+  }
+  else{
+    minutes=Math.floor(inputValue/60);
+    seconds=inputValue-Math.floor(minutes*60);
+  }
+
+  if(minutes<10){
+    minutes="0"+minutes;
+  }
+  if(seconds<10){
+    seconds="0"+seconds;
+  }
+  
+  var finalValue = minutes+":"+seconds;
+  return finalValue;
+}
 
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