Events

Use the secureFields.on(...) callback function to subscribe to one or more of the ready, change, error or validate events.
on ready
on validate
on success
on change
on error
on ready
The ready event will be emitted once the iframes are loaded.
secureFields.on("ready", function() { 
 // setting a placholder for the cardNumber field
 secureFields.setPlaceholder("cardNumber", "Card number");
​
 // setting a placeholder for the CVV field
 secureFields.setPlaceholder("cvv", "CVV");
});
on validate
The validate event will be emitted once the form was submitted with secureFields.submit();
secureFields.on("validate", function(event) {
  // put a red border around the fields if they are not valid
  secureFields.setStyle("cardNumber.invalid","border: 1px solid #f00");
  secureFields.setStyle("cvv.invalid","border: 1px solid #f00");
});
Where the event callback object has the following structure:
{
  "fields": {
    "cardNumber": {
      "length": 0,
      "valid": false
    },
    "cvv": {
      "length": 3,
      "valid": true
    }
  },
  "hasErrors": true // indicates if one of the fields has valid=false
}
on success
The success event will be emitted if the tokenization was successful.
secureFields.on("success", function(data) {
  if(data.transactionId) {
    // send data.transactionId and the
    // rest of the form to your server
  }
});
Where the event callback object has the following structure:
{
  "result":"success",
  "transactionId":"180403204621339015",
  "cardInfo":
  {
    "brand":"VISA DEBIT",
    "issuer":"Some Bank",
    "type":"debit", // debit or credit
    "distinction":"unknown", // consumer or corporate
    "country":"US"
  }
}
on change
The change event will be emitted whenever one of the following events are getting triggered:
focus
blur
keyUp
keyDown
touchstart
touchmovetouchend
touchcancel
touchforcechange
secureFields.on("change", function(event) {
  // some fancy stuff
});
Where the event callback object has the following structure:
{
  "fields": {
    "cardNumber": {
      "length": 0,
      "valid": false
    },
    "cvv": {
      "length": 0,
      "valid": false
    }
  },
  "hasErrors": true,
  "event": {
    "field": "cardNumber",  // the affected input field
    "type": "blur"          // the original event
  }
}
on error
The error event will be emitted if there was an error after calling secureFields.initTokenize(...).

Possible scenarios are:
Wrong merchantId configured in secureFields.initTokenize(...);
Wrong name of card number, CVV fields
Wrong merchantId configuration on Datatrans side
Those errors should only occur during development/testing.
secureFields.on("error", function(data) {
  // something bad happened
});
​
Initialization and Styling
Token API
Last updated 1 year ago