braintree-web

A suite of tools for integrating Braintree in the browser.

This is the repo to submit issues if you have any problems or questions about a Braintree JavaScript integration.

For a ready-made payment UI, see Braintree Web Drop-in.

Install

npm install braintree-web

bower install braintree-web

Usage

For more thorough documentation, visit the JavaScript client SDK docs.

If you are upgrading from version 2.x, take a look at our migration guide.

Hosted Fields integration

<form action="/" id="my-sample-form">
  <input type="hidden" name="payment_method_nonce">
  <label for="card-number">Card Number</label>
  <div id="card-number"></div>

  <label for="cvv">CVV</label>
  <div id="cvv"></div>

  <label for="expiration-date">Expiration Date</label>
  <div id="expiration-date"></div>

  <input id="my-submit" type="submit" value="Pay" disabled/>
</form>

var submitBtn = document.getElementById('my-submit');
var form = document.getElementById('my-sample-form');

braintree.client.create({
  authorization: CLIENT_AUTHORIZATION
}, clientDidCreate);

function clientDidCreate(err, client) {
  braintree.hostedFields.create({
    client: client,
    styles: {
      'input': {
        'font-size': '16pt',
        'color': '#3A3A3A'
      },

      '.number': {
        'font-family': 'monospace'
      },

      '.valid': {
        'color': 'green'
      }
    },
    fields: {
      number: {
        selector: '#card-number'
      },
      cvv: {
        selector: '#cvv'
      },
      expirationDate: {
        selector: '#expiration-date'
      }
    }
  }, hostedFieldsDidCreate);
}

function hostedFieldsDidCreate(err, hostedFields) {
  submitBtn.addEventListener('click', submitHandler.bind(null, hostedFields));
  submitBtn.removeAttribute('disabled');
}

function submitHandler(hostedFields, event) {
  event.preventDefault();
  submitBtn.setAttribute('disabled', 'disabled');

  hostedFields.tokenize(function (err, payload) {
    if (err) {
      submitBtn.removeAttribute('disabled');
      console.error(err);
    } else {
      form['payment_method_nonce'].value = payload.nonce;
      form.submit();
    }
  });
}

Advanced integration

To be eligible for the easiest level of PCI compliance (SAQ A), payment fields cannot be hosted on your checkout page. For an alternative to the following, use Hosted Fields.

braintree.client.create({
  authorization: CLIENT_AUTHORIZATION
}, function (err, client) {
  client.request({
    endpoint: 'payment_methods/credit_cards',
    method: 'post',
    data: {
      creditCard: {
        number: '4111111111111111',
        expirationDate: '10/20',
        cvv: '123',
        billingAddress: {
          postalCode: '12345'
        }
      }
    }
  }, function (err, response) {
    // Send response.creditCards[0].nonce to your server
  });
});

For more examples, see the reference.

Promises

All the asyncronous methods will return a Promise if no callback is provided.

var submitBtn = document.getElementById('my-submit');
var yourStylesConfig = { /* your Hosted Fields `styles` config */ };
var yourFieldsConfig = { /* your Hosted Hields `fields` config */ };

braintree.client.create({authorization: CLIENT_AUTHORIZATION}).then(function (client) {
  return braintree.hostedFields.create({
    client: client,
    styles: yourStylesConfig,
    fields: yourFieldsConfig
  });
}).then(function (hostedFields) {
  submitBtn.addEventListener('click', function (event) {
    event.preventDefault();
    submitBtn.setAttribute('disabled', 'disabled');

    hostedFields.tokenize().then(function (payload) {
      // send payload.nonce to your server
    }).catch(function (err) {
      submitBtn.removeAttribute('disabled');
      console.error(err);
    });
  });
});

brucewpaul / braintree-web