add js validation password

Program's_Contributed_By_Contributors/JS_Programs/simpleValidationPassword.js

@@ -0,0 +1,50 @@
+// Validation password using regex
+
+function checkValidInput(password, password2) {
+  let isValid = true;
+  let message = "Password changed successfully"; // Default message
+
+  // Check minimum length
+  if (password.length < 8) {
+      isValid = false;
+      message = "Password should be at least 8 characters long";
+  }
+
+  // Check for at least one uppercase letter
+  if (!/[A-Z]/.test(password)) {
+      isValid = false;
+      message = "Password must contain at least 1 uppercase letter";
+  }
+
+  // Check for at least one lowercase letter
+  if (!/[a-z]/.test(password)) {
+      isValid = false;
+      message = "Password must contain at least 1 lowercase letter";
+  }
+
+  // Check for at least one digit
+  if (!/\d/.test(password)) {
+      isValid = false;
+      message = "Password must contain at least 1 digit";
+  }
+
+  // Check for at least one special character
+  if (!/[^A-Za-z0-9]/.test(password)) {
+      isValid = false;
+      message = "Password must contain at least 1 special character";
+  }
+
+  // Check if password and confirmation match
+  if (password !== password2) {
+      isValid = false;
+      message = "Password and password confirmation do not match";
+  }
+
+  return { result: isValid, message: message };
+}
+
+// Example usage:
+let password = "Passw0rd!";
+let password2 = "Passw0rd!";
+let result = checkValidInput(password, password2);
+console.log(JSON.stringify(result));