script.js

function sendMoney(){
   var enterName = document.getElementById("enterName").value;
   var enterAmount = parseInt(document.getElementById("enterAmount").value);
   var enterSName = document.getElementById("enterSName").value;
   var findSenderBankAccount = enterSName + "BankBalance";
   var enterSAmount =parseInt(document.getElementById(findSenderBankAccount).innerHTML);
   if (enterAmount > enterSAmount) {
      alert("Insufficient Balance.") 
   }
   else if(enterAmount >= 10000){
      alert("Exceeded! Limit should be less than Rs 10,000")
   }
else { 
      var findUserBankAccount = enterName + "BankBalance";
     
      var finalAmount = parseInt(document.getElementById(findUserBankAccount).innerHTML) + enterAmount;
      var myAccountBalance = parseInt(document.getElementById(findSenderBankAccount).innerHTML) - enterAmount;
      document.getElementById(findSenderBankAccount).innerHTML = myAccountBalance;
      document.getElementById(findUserBankAccount).innerHTML = finalAmount;
      alert(`Successful Transaction !!  
      ${enterAmount}/- is sent to ${enterName}@email.com.`)

      // transaction history 
      var createPTag = document.createElement("li");
      var textNode = document.createTextNode(`Rs ${enterAmount} is sent from the sender with Email-id ${enterSName}@email.com
 to recepient with Email-id ${enterName}@email.com on ${Date()}.`);
      createPTag.appendChild(textNode);
      var element = document.getElementById("transaction-history-body");
      element.insertBefore(createPTag, element.firstChild);
   }
}