JavaScript

Calculate Partial Loan Repayment

When the "Send" button is clicked, the webpage will perform basic validation, then use the given details to call the API, with service name "calculatePartialLoanRepayment".

If there are no errors with the information provided, the webpage will proceed to parse a JSON string from "calculatePartialLoanRepayment" into "responseObj"

We will be able to import useful data from these 3 sources, and to call a function and store the user ID and PIN.

Put the value of getUserID() into the value of userID.
Put the value of getPIN() into the value of PIN.

getUserID&getPIN

This code required data variable from Jsp, please refer to getUserID&getPIN above.

We will create a function and a header. The header will contain servicename, userID, PIN.

Then we will get and validate those values we have so far.

setUserID&setPIN

This code required data variable from Jsp, please refer to setUserID&setPIN above.

showErrorModal

This code required data variable showErrorModal from Jsp, please refer to showErrorModal above.

We will disable Send button

We will set a header object and content object.

The header object contains:

serviceName
userID
PIN
OTP

The content object contains:

accountID
repaymentAmount
keepMaturityDate

Then will use JSON to convert headerObj and contentObj into var header and var content.

xmlHttp

This code required data variable xmlHttp from Jsp, please refer to xmlHttp above.

ApiURL

This code required data variable ApiURL from Jsp, please refer to ApiURL above.

Set up http request.

If xmlHttp is equals to nothing, the web page will display an alert message:"Browser does not support HTTP request."

If xmlHttp is not equal to nothing, the web page will return data from the url and the header and content."

The timeout will be 5000s.

xmlHttp

This code required data variable xmlHttp from Jsp, please refer to xmlHttp above.

ApiURL

This code required data variable ApiURL from Jsp, please refer to ApiURL above.

Setup http event handlers。If globalerrorID = "010041", return OTP. Else if globalerrorID not = "010000", return error details.

onreadystatechange

This code required data variable onreadystatechange from Jsp, please refer to onreadystatechange above.

xmlHttp

This code required data variable xmlHttp from Jsp, please refer to xmlHttp above.

showOTPModel

This code required data variable showOTPModel from Jsp, please refer to showOTPModel above.

showErrorModal

This code required data variable showErrorModal from Jsp, please refer to showErrorModal above.

Get and Display necessary data.

We will enable "Send" button.

Once the time is out, it will show error modal: "Timeout invoking API."

Then send the http request.

xmlHttp

This code required data variable xmlHttp from Jsp, please refer to xmlHttp above.

ontimeout

This code required data variable ontimeout from Jsp, please refer to ontimeout above.

showErrorModal

This code required data variable showErrorModal from Jsp, please refer to showErrorModal above.

Button will be disabled when there is an error occurs.

OTP model update button clicked

setOTP

This code required data variable setOTP from Jsp, please refer to setOTP above.

Overview of "Calculate Partial Loan Repayment” function

<h2 class="page-header" style="color:#937851">Calculate Partial Loan Repayment</h2>

<h3 style="color:#937851">Input</h3>

</div>

<button type="reset" class="btn btn-default">Clear</button>

</div>

</div>

</div>

<label for="accountID" class="col-sm-4 control-label">Account ID</label>

</div>

<label for="repaymentAmount" class="col-sm-4 control-label">Repayment Amount</label>

</div>

<label for="keepMaturityDate" class="col-sm-4 control-label">Keep Maturity Date</label>

</div>

</form>

</div>

<h3 style="color:#937851">Output</h3>

</div>

<button type="reset" class="btn btn-default">Clear</button>

</div>

<label for="BalanceAfterRepayment" class="col-sm-4 control-label">Balance After Repayment</label>

</div>

<label for="BalanceBeforeRepayment" class="col-sm-4 control-label">Balance Before Repayment</label>

</div>

<label for="InterestRate" class="col-sm-4 control-label">Interest Rate</label>

</div>

<label for="NewInterest" class="col-sm-4 control-label">New Interest</label>

</div>

<label for="NewLoanAmount" class="col-sm-4 control-label">New Loan Amount</label>

</div>

</div>

<label for="NewMaturityDate" class="col-sm-4 control-label">New Maturity Date</label>

</div>

<label for="NewMonthlyInstallment" class="col-sm-4 control-label">New Monthly Installment</label>

</div>

<label for="NewMonthsRemaining" class="col-sm-4 control-label">New Months Remaining</label>

</div>

</div>

<label for="OldMaturityDate" class="col-sm-4 control-label">Old Maturity Date</label>

</div>

<label for="OldMonthlyInstallment" class="col-sm-4 control-label">Old Monthly Installment</label>

</div>

<label for="PenaltyAmount" class="col-sm-4 control-label">Penalty Amount</label>

</div>

<label for="PenaltyRate" class="col-sm-4 control-label">Penalty Rate</label>

</div>

<label for="RepaymentAmountAfterPenalty" class="col-sm-4 control-label">Repayment Amount After Penalty</label>

</div>

<label for="SettlementAccountBalance" class="col-sm-4 control-label">Settlement Account Balance</label>

</div>

<label for="SettlementAccountID" class="col-sm-4 control-label">Settlement AccountID</label>

</div>

<label for="Status" class="col-sm-4 control-label">Status</label>

</div>

</form>

</div>

<!-- javascript libraries

======================================== -->

$(document).ready(function () {

// init user credentials

document.getElementById("userID").value = getUserID();

document.getElementById("PIN").value = getPIN();

/*----------------------------------------

* [Send] button clicked

$("#Send").click(function (event) {

(function() {

// set service header values

var serviceName = "calculatePartialLoanRepayment";

var userID = document.getElementById("userID").value;

setUserID(userID);

var PIN = document.getElementById("PIN").value;

setPIN(PIN);

// get and validate form values

var accountID = document.getElementById("accountID").value;

if (accountID === ""){

showErrorModal("Account ID cannot be blank.");

return;

}

var repaymentAmount = document.getElementById("repaymentAmount").value;

if (repaymentAmount === ""){

showErrorModal("Repayment Amount cannot be blank.");

return;

}

var keepMaturityDate = document.getElementById("keepMaturityDate").value;

if (accountID === ""){

showErrorModal("keep Maturity Date cannot be blank.");

return;

}

// disable Send button

document.getElementById("Send").disabled = true;

// set request parameters

var headerObj = {

Header: {

serviceName: serviceName,

userID: userID,

PIN: PIN,

OTP: OTP

}

};

var contentObj = {

Content: {

accountID: accountID,

repaymentAmount: repaymentAmount,

keepMaturityDate: keepMaturityDate

}

};

var header = JSON.stringify(headerObj);

var content = JSON.stringify(contentObj);

// setup http request

var xmlHttp = new XMLHttpRequest();

if (xmlHttp === null){

alert("Browser does not support HTTP request.");

return;

}

xmlHttp.open("POST", getApiURL()+"?Header="+header+"&Content="+content, true);

xmlHttp.timeout = 5000;

// setup http event handlers

xmlHttp.onreadystatechange = function() {

if (xmlHttp.readyState === 4 && xmlHttp.status === 200) {

responseObj = JSON.parse(xmlHttp.responseText);

serviceRespHeader = responseObj.Content.ServiceResponse.ServiceRespHeader;

globalErrorID = serviceRespHeader.GlobalErrorID;

if (globalErrorID === "010041"){

showOTPModal();

return;

}

else if (globalErrorID !== "010000"){

showErrorModal(serviceRespHeader.ErrorDetails);

return;

}

// get data

PartialRepaymentResponse = responseObj.Content.ServiceResponse.PartialRepaymentResponse;

Status = PartialRepaymentResponse.Status;

NewLoanAmount = PartialRepaymentResponse.NewLoanAmount;

BalanceAfterRepayment = PartialRepaymentResponse.BalanceAfterRepayment;

PenaltyRate = PartialRepaymentResponse.PenaltyRate;

NewMaturityDate = PartialRepaymentResponse.NewMaturityDate;

NewMonthsRemaining = PartialRepaymentResponse.NewMonthsRemaining;

OldMonthlyInstallment = PartialRepaymentResponse.OldMonthlyInstallment;

OldMaturityDate = PartialRepaymentResponse.OldMaturityDate;

OldLoanTerm = PartialRepaymentResponse.OldLoanTerm;

NewMonthlyInstallment = PartialRepaymentResponse.NewMonthlyInstallment;

BalanceBeforeRepayment = PartialRepaymentResponse.BalanceBeforeRepayment;

SettlementAccountBalance = PartialRepaymentResponse.SettlementAccountBalance;

PenaltyAmount = PartialRepaymentResponse.PenaltyAmount;

SettlementAccountID = PartialRepaymentResponse.SettlementAccountID;

NewInterest = PartialRepaymentResponse.NewInterest;

InterestRate = PartialRepaymentResponse.InterestRate;

NewLoanTerm = PartialRepaymentResponse.NewLoanTerm;

RepaymentAmountAfterPenalty = PartialRepaymentResponse.RepaymentAmountAfterPenalty;

// display data

document.getElementById("Status").value = Status;

document.getElementById("NewLoanAmount").value = NewLoanAmount;

document.getElementById("BalanceAfterRepayment").value = BalanceAfterRepayment;

document.getElementById("PenaltyRate").value = PenaltyRate ;

document.getElementById("NewMaturityDate").value = NewMaturityDate ;

document.getElementById("NewMonthsRemaining").value = NewMonthsRemaining;

document.getElementById("OldMonthlyInstallment").value = OldMonthlyInstallment;

document.getElementById("OldMaturityDate").value = OldMaturityDate;

document.getElementById("OldLoanTerm").value = OldLoanTerm;

document.getElementById("NewMonthlyInstallment").value = NewMonthlyInstallment;

document.getElementById("BalanceBeforeRepayment").value = BalanceBeforeRepayment;

document.getElementById("SettlementAccountBalance").value = SettlementAccountBalance;

document.getElementById("PenaltyAmount").value = PenaltyAmount;

document.getElementById("SettlementAccountID").value = SettlementAccountID;

document.getElementById("NewInterest").value = NewInterest;

document.getElementById("InterestRate").value = InterestRate;

document.getElementById("NewLoanTerm").value = NewLoanTerm;

document.getElementById("RepaymentAmountAfterPenalty").value = RepaymentAmountAfterPenalty;

// enable Send button

document.getElementById("Send").disabled = false;

}

};

xmlHttp.ontimeout = function (e) {

showErrorModal("Timeout invoking API.");

return;

};

// send the http request

xmlHttp.send();

})();

});

/* ----------------------------------------

* error model close button clicked

$("#CloseError").click(function (event) {

(function() {

document.getElementById("Send").disabled = false;

})();

});

/* ----------------------------------------

* OTP model update button clicked

$("#UpdateOTP").click(function (event) {

(function() {

var OTP = document.getElementById("OTP").value;

setOTP(OTP, function() { // ensure OTP set before clicking Send

document.getElementById("Send").disabled = false;

document.getElementById("Send").click();

});

})();

});

</script>

Calculate Partial Loan Repayment

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