diff --git a/01-js/easy/anagram.js b/01-js/easy/anagram.js
index fff61427..d3b19686 100644
--- a/01-js/easy/anagram.js
+++ b/01-js/easy/anagram.js
@@ -4,11 +4,28 @@
   - A word, phrase, or name formed by rearranging the letters of another, such as spar, formed from rasp.
 
   Once you've implemented the logic, test your code by running
-  - `npm run test-anagram`
+  - `npm run test-angram`
 */
 
-function isAnagram(str1, str2) {
+function ConvertToSmall(str){
+  let d = "";
+  for(let i = 0;i<str.length;i++)
+  {
+    if(str.charCodeAt(i)>=65 && str.charCodeAt(i)<=90)
+      d+= String.fromCharCode(str.charCodeAt(i)+32);
+    else
+      d+= str[i];
+  }
+  return d;
+}
 
+function isAnagram(str1, str2) {
+  str1 = ConvertToSmall(str1);
+  str2 = ConvertToSmall(str2);
+  if(str1.split("").sort().join("") === str2.split("").sort().join(""))
+  return true;
+  else
+  return false;
 }
 
-module.exports = isAnagram;
+module.exports = isAnagram;
\ No newline at end of file
diff --git a/01-js/easy/expenditure-analysis.js b/01-js/easy/expenditure-analysis.js
index 20fbb943..6ef7774d 100644
--- a/01-js/easy/expenditure-analysis.js
+++ b/01-js/easy/expenditure-analysis.js
@@ -9,7 +9,21 @@
 */
 
 function calculateTotalSpentByCategory(transactions) {
-  return [];
+  let arr = [];
+  let k = 0;
+  for(let i = 0;i<transactions.length;i++){
+    if(transactions[i].category != ""){
+    arr[k] = {category: transactions[i].category, totalSpent: transactions[i].price};
+    for(let j = i+1;j<transactions.length;j++){
+      if(transactions[i].category == transactions[j].category){
+        arr[k].totalSpent+=transactions[j].price;
+        transactions[j].category = "";
+      }
+    }
+    k++;
+  }
+  }
+  return arr;
 }
 
 module.exports = calculateTotalSpentByCategory;
diff --git a/01-js/medium/palindrome.js b/01-js/medium/palindrome.js
index d8fe2d8f..0dc89536 100644
--- a/01-js/medium/palindrome.js
+++ b/01-js/medium/palindrome.js
@@ -6,8 +6,21 @@
   - `npm run test-palindrome`
 */
 
+function removePunctuation(str1) {
+  let s = "";
+  for (let i = 0; i < str1.length; i++) {
+    if ((str1.charCodeAt(i) >= 97 && str1.charCodeAt(i) <= 122))
+      s += str1[i];
+  }
+  return s;
+}
 function isPalindrome(str) {
+  str = str.toLowerCase();
+  str = removePunctuation(str);
+  if(str == str.split("").reverse().join(""))
   return true;
+  else
+  return false;
 }
 
 module.exports = isPalindrome;
diff --git a/01-js/medium/times.js b/01-js/medium/times.js
index eb125cc2..4177c0a0 100644
--- a/01-js/medium/times.js
+++ b/01-js/medium/times.js
@@ -7,6 +7,12 @@ Try running it for
 Hint - use Date class exposed in JS
 */
 
-function calculateTime(n) {
-    return 0.01;
-}
\ No newline at end of file
+function calculateTime() {
+    let sum = 0;
+    let startTime = new Date().getTime();
+    for(let i = 1;i<=10000000;i++)
+    sum+=i;
+    let endTime = new Date().getTime();
+    console.log((endTime-startTime)/1000);
+}
+calculateTime();
\ No newline at end of file
diff --git a/01-js/package-lock.json b/01-js/package-lock.json
new file mode 100644
index 00000000..3dfb998e
--- /dev/null
+++ b/01-js/package-lock.json
@@ -0,0 +1,13 @@
+{
+  "name": "01",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "01",
+      "version": "1.0.0",
+      "license": "ISC"
+    }
+  }
+}
diff --git a/02-async-js/easy/easy-1.js b/02-async-js/easy/easy-1.js
new file mode 100644
index 00000000..ee2c6a8e
--- /dev/null
+++ b/02-async-js/easy/easy-1.js
@@ -0,0 +1,6 @@
+let i = 0;
+function counter(){
+    console.log(++i);
+    console.clear();
+}
+setInterval(counter,1000);
\ No newline at end of file
diff --git a/02-async-js/easy/easy-2.js b/02-async-js/easy/easy-2.js
new file mode 100644
index 00000000..fb75e989
--- /dev/null
+++ b/02-async-js/easy/easy-2.js
@@ -0,0 +1,7 @@
+let i = 0;
+counter_2();
+function counter_2(){
+    console.log(++i);
+    setTimeout(counter_2,1000);
+}
+
diff --git a/02-async-js/easy/easy-3.js b/02-async-js/easy/easy-3.js
new file mode 100644
index 00000000..68618a33
--- /dev/null
+++ b/02-async-js/easy/easy-3.js
@@ -0,0 +1,9 @@
+const fs = require('fs');
+
+fs.readFile('02-async-js/easy/easy-1.js','utf8',function(err, data){
+    if(err) {
+        console.error(err);
+        return;
+    }
+    console.log(data); 
+});
\ No newline at end of file
diff --git a/02-async-js/medium/createClock.js b/02-async-js/medium/createClock.js
new file mode 100644
index 00000000..7e0b6fa7
--- /dev/null
+++ b/02-async-js/medium/createClock.js
@@ -0,0 +1,8 @@
+function printTime(){
+    let hour = new Date().getHours();
+    let min = new Date().getMinutes();
+    let sec = new Date().getSeconds();
+    console.log(hour+":"+min+":"+sec);
+}
+
+setInterval(printTime,1000);
\ No newline at end of file
diff --git a/02-async-js/medium/medium-1.js b/02-async-js/medium/medium-1.js
new file mode 100644
index 00000000..1cfaa6b7
--- /dev/null
+++ b/02-async-js/medium/medium-1.js
@@ -0,0 +1,30 @@
+const fs = require('fs');
+let text;
+let str = "";
+let check = true;
+function printData(err,data){
+    if(err){
+        console.log(err);
+    }
+    text = data;
+    for(let i = 0;i<text.length;i++){
+        if(text[i] === ' ' && check === true){
+            str+=' ';
+            check = false;
+        }
+        else
+        if(text[i] !== ' '){
+            str+=text[i];
+            check = true;
+        }
+    }
+    fs.writeFile('02-async-js/medium/removeSpace.txt',str,(err) => {
+        if (err) {
+          console.error('Error writing to file:', err);
+        } else {
+          console.log('Data has been written to the file successfully!');
+        }
+    });
+}
+fs.readFile('02-async-js/medium/removeSpace.txt','utf-8',printData);
+
diff --git a/02-async-js/medium/removeSpace.txt b/02-async-js/medium/removeSpace.txt
new file mode 100644
index 00000000..43e0d9dd
--- /dev/null
+++ b/02-async-js/medium/removeSpace.txt
@@ -0,0 +1 @@
+Binay Pratap Singh
\ No newline at end of file