The This keyword is used in the function

The This keyword is used to bind methods and properties to an instance of an object

<script type= "Text/javascript" >/*Check the constructor of the bank account object*/    functionChecking (amount) { This. balance = Amount;//Properties         This. Deposit = Deposit;//Method         This. withdraw = withdraw;//Method         This. toString = tostring;//Method    }    functionDeposit (amount) { This. Balance + =amount; }    functionWithdraw (amount) {if(Amount <= This. Balance) {             This. Balance-=amount; }        if(Amount > This. Balance) {Alert ("Insufficient funds"); }    }    functiontoString () {return"Balance:" + This. Balance; }    varAccount =NewChecking (500); Account.deposit (1000); Alert (account.tostring ()); //balance:1500Account.withdraw (750); Alert (account.tostring ()); //Balance:Account.withdraw (800);//Show "Insufficient balance"Alert (account.tostring ());//Balance:</script>

The This keyword is used in the function