script.js

let myAccountBalance = parseInt(document.getElementById("myAccountBalance").innerText);

function sendMoney()
{
   var enterName = document.getElementById("enterName").value;
   var enterAmount = parseInt(document.getElementById("enterAmount").value);

   if (enterAmount > 50000) 
   {
      alert("Insufficient Balance.")
   } 
   else 
   {
      var findUserBankAccount = enterName + "BankBalance";
      var finalAmount = parseInt(document.getElementById(findUserBankAccount).innerHTML) + enterAmount;
      var myAccountBalance = parseInt(document.getElementById("myAccountBalance").innerText) - enterAmount
      document.getElementById("myAccountBalance").innerText = myAccountBalance
      document.getElementById(findUserBankAccount).innerHTML = finalAmount;
      alert(`$${enterAmount} is sent to recepient with Email-id ${enterName}@email.com.`)

      // transaction history
      var createPTag = document.createElement("li");
      var textNode = document.createTextNode(`$${enterAmount} is sent 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);
   }
}