1. Build Integration

var razorpay = new Razorpay({
  key: '',
    // logo, displayed in the popup
  image: 'https://i.imgur.com/n5tjHFD.jpg',
});
razorpay.once('ready', function(response) {
  console.log(response.methods);
})
```js: Response
{
  "methods": {
    "entity": "methods",
    "card": true,
    "debit_card": true,
    "credit_card": true,
    "prepaid_card": true,
    "card_networks": {
      "AMEX": 0,
      "DICL": 1,
      "MC": 1,
      "MAES": 1,
      "VISA": 1,
      "JCB": 1,
      "RUPAY": 1,
      "BAJAJ": 0
    },
    "amex": false,
    "netbanking": {
      ...
      ...
      "HDFC": "HDFC Bank",
      "ICIC": "ICICI Bank"
      ...
      ...
    },
    "wallet": {
      "payzapp": true
    },
    "emi": true,
    "upi": true,
    "cardless_emi": [],
    "paylater": [],
    "emi_subvention": "customer",
    "emi_options": {
      ...
      ...
      "ICIC": [
        {
          "duration": 3,
          "interest": 13,
          "subvention": "customer",
          "min_amount": 150000
        },
        {
          "duration": 6,
          "interest": 13,
          "subvention": "customer",
          "min_amount": 150000
        }
        ...// rest of the emi plans
      ],
      "HDFC": [
        {
          "duration": 12,
          "interest": 14,
          "subvention": "customer",
          "min_amount": 300000
        },
        {
          "duration": 18,
          "interest": 15,
          "subvention": "customer",
          "min_amount": 300000
        }
        ...
        ...// rest of the emi plans
      ]
    }
  }
}

var data = {
  amount: 1000, // in currency subunits. 
  currency: "INR",// 
  email: 'gaurav.kumar@example.com',
  contact: '+919876543210',
  notes: {
    address: 'Ground Floor, SJR Cyber, Laskar Hosur Road, Bengaluru',
  },
  order_id: 'order_CuEzONfnOI86Ab',// Replace with Order ID generated in Step 4
  method: 'netbanking',

  // method specific fields
  bank: 'HDFC'
};

var btn = document.querySelector('#btn');
btn.addEventListener('click', function(){
  // has to be placed within user initiated context, such as click, in order for popup to open.
  razorpay.createPayment(data);

  razorpay.on('payment.success', function(resp) {
    alert(resp.razorpay_payment_id),
    alert(resp.razorpay_order_id),
    alert(resp.razorpay_signature)}); // will pass payment ID, order ID, and Razorpay signature to success handler.

  razorpay.on('payment.error', function(resp){alert(resp.error.description)}); // will pass error object to error handler

})

```js: createPayment with callback URL
var data = {
  callback_url: 'https://www.examplecallbackurl.com/',
  amount: 1000, // in currency subunits. 
  currency: "INR",// 
  email: 'gaurav.kumar@example.com',
  contact: '+919876543210',
  notes: {
    address: 'Ground Floor, SJR Cyber, Laskar Hosur Road, Bengaluru',
  },
  order_id: 'order_CuEzONfnOI86Ab',// Replace with Order ID generated in Step 4
  method: 'netbanking',

  // method specific fields
  bank: 'HDFC'
};

var btn = document.querySelector('#btn');
btn.addEventListener('click', function(){
  // has to be placed within user initiated context, such as click, in order for popup to open.
  razorpay.createPayment(data);

})

{
  "razorpay_payment_id": "pay_29QQoUBi66xm2f",
  "razorpay_order_id": "order_9A33XWu170gUtm",
  "razorpay_signature": "9ef4dffbfd84f1318f6739a3ce19f9d85851857ae648f114332d8401e0949a3d"
}

{
  "error": {
    "code": "BAD_REQUEST_ERROR",
    "description": "Authentication failed due to incorrect otp",
    "field": null,
    "source": "customer",
    "step": "payment_authentication",
    "reason": "invalid_otp",
    "metadata": {
      "payment_id": "pay_EDNBKIP31Y4jl8",
      "order_id": "order_DBJKIP31Y4jl8"
    }
  }
}

RazorpayClient razorpay = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]");

String secret = "EnLs21M47BllR3X8PSFtjtbd";

JSONObject options = new JSONObject();
options.put("razorpay_order_id", "order_IEIaMR65cu6nz3");
options.put("razorpay_payment_id", "pay_IH4NVgf4Dreq1l");
options.put("razorpay_signature", "0d4e745a1838664ad6c9c9902212a32d627d68e917290b0ad5f08ff4561bc50f");

boolean status =  Utils.verifyPaymentSignature(options, secret);

```php: PHP
$api = new Api($key_id, $secret);

$api->utility->verifyPaymentSignature(array('razorpay_order_id' => $razorpayOrderId, 'razorpay_payment_id' => $razorpayPaymentId, 'razorpay_signature' => $razorpaySignature));

```ruby: Ruby
require "razorpay"
Razorpay.setup('YOUR_KEY_ID', 'YOUR_SECRET')

payment_response = {
       razorpay_order_id: 'order_IEIaMR65cu6nz3',
       razorpay_payment_id: 'pay_IH4NVgf4Dreq1l',
       razorpay_signature: '0d4e745a1838664ad6c9c9902212a32d627d68e917290b0ad5f08ff4561bc50f'
     }
Razorpay::Utility.verify_payment_signature(payment_response)

```python: Python
import razorpay
client = razorpay.Client(auth=("YOUR_ID", "YOUR_SECRET"))

client.utility.verify_payment_signature({
  'razorpay_order_id': razorpay_order_id,
  'razorpay_payment_id': razorpay_payment_id,
  'razorpay_signature': razorpay_signature
  })

```c: .NET
RazorpayClient client = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]");

Dictionary options = new Dictionary();
options.Add("razorpay_order_id", "order_IEIaMR65");
options.Add("razorpay_payment_id", "pay_IH4NVgf4Dreq1l");
options.Add("razorpay_signature", "0d4e745a1838664ad6c9c9902212a32d627d68e917290b0ad5f08ff4561bc50");

Utils.verifyPaymentSignature(options);

```nodejs: Node.js
var instance = new Razorpay({ key_id: 'YOUR_KEY_ID', key_secret: 'YOUR_SECRET' })

var { validatePaymentVerification, validateWebhookSignature } = require('./dist/utils/razorpay-utils');
validatePaymentVerification({"order_id": razorpayOrderId, "payment_id": razorpayPaymentId }, signature, secret);

```Go: Go
import ( razorpay "github.com/razorpay/razorpay-go" )
client := razorpay.NewClient("YOUR_KEY_ID", "YOUR_SECRET")

params := map[string]interface{}{
 "razorpay_order_id": "order_IEIaMR65cu6nz3",
 "razorpay_payment_id": "pay_IH4NVgf4Dreq1l",
}

signature := "0d4e745a1838664ad6c9c9902212a32d627d68e917290b0ad5f08ff4561bc50f";
secret := "EnLs21M47BllR3X8PSFtjtbd";
utils.VerifyPaymentSignature(params, signature, secret)