Add Number.html and String.html with examples of math and string functions in JavaScript

Pankaj-Str · Pankaj-Str · commit 15f937f7e22e · 2025-06-28T13:28:43.000+05:30
diff --git a/Example/Lectures/06 Day/Number.html b/Example/Lectures/06 Day/Number.html
@@ -0,0 +1,71 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+
+    <script>
+
+        // using maths functions
+        
+        console.log(Math.PI); // 3.141592653589793
+        console.log(Math.E); // 2.718281828459045
+
+        // round of numbers
+        console.log(Math.round(4.3)); 
+
+        // square root
+        console.log(Math.sqrt(16)); 
+
+        // power
+        console.log(Math.pow(2, 3));
+
+        // random number
+        console.log(Math.random());
+
+        // random number between 0 and 100
+        console.log(Math.floor(Math.random() * 101));
+
+        // minimum and maximum
+        console.log(Math.min(1, 2, 3, 4, 5));
+        console.log(Math.max(1, 2, 3, 4, 5));
+
+        // absolute value
+        console.log(Math.abs(-5)); // 5
+
+        // average of numbers
+        const numbers = [1, 2, 3, 4, 5];
+
+        // type 
+
+        data = 100
+        console.log(typeof data);
+
+        data = "100"
+        console.log(typeof data);
+
+        // type conversion
+        data = "56.8"
+        data = Number(data);
+        console.log(typeof data); 
+
+        // parseInt and parseFloat
+        data = parseInt(data)
+        console.log(typeof data);
+
+        data = parseFloat(data);
+        console.log(typeof data);
+
+        // toString
+        data = 100;
+        console.log(typeof data.toString());
+
+    </script>
+
+
+</head>
+<body>
+    
+</body>
+</html>
diff --git a/Example/Lectures/06 Day/String.html b/Example/Lectures/06 Day/String.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+
+    <script>
+
+        data = "codes with pankaj"
+        // find the length of string
+        console.log(data.length);
+        // find the index of a character
+        console.log(data.indexOf("p")); 
+        // find the last index of a character
+        console.log(data.lastIndexOf("c"));
+
+        // lowercase and uppercase
+        console.log(data.toLowerCase());
+        console.log(data.toUpperCase());
+
+        // trim
+        data = "   codes with pankaj   "
+        console.log(data.trim());
+        console.log(data);
+
+        // split
+        data = "codes with pankaj"
+        console.log(data.split(" "));
+
+        // replace
+        data = "codes with pankaj"
+        console.log(data.replace("with", "and"));
+
+        // substring
+        data = "codes with pankaj"
+        console.log(data.substring(0, 5)); // "codes"
+        console.log(data.substring(5)); // " with pankaj"
+
+        // charAt
+        data = "codes with pankaj"
+        console.log(data.charAt(0)); // "c"
+        console.log(data.charAt(5)); // " "
+
+        // includes
+        data = "codes with pankaj"
+        console.log(data.includes("pankaj")); // true
+        console.log(data.includes("time")); // false
+
+        // startsWith and endsWith
+        console.log(data.startsWith("codes")); // true
+        console.log(data.endsWith("pankaj")); // true
+
+        // repeat
+        console.log(data.repeat(10)); // "codes with pankajcodes with pankaj"
+
+        // template literals
+        const name = "Pankaj";
+        const age = 25;
+        console.log(`My name is ${name} and I am ${age} years old.`); // "My name is Pankaj and I am 25 years old."
+
+    </script>
+
+</head>
+<body>
+    
+</body>
+</html>
