Subscribe Email is a standalone UMD JavaScript module for rendering a mailing list sign up form quickly on a webpage.

It allows developers to quickly include an email collection form on a page without being concerned with the implementation details of a specific mailing list platform. It currently supports mailing lists on SendGrid, MailChimp and Universe.

Getting the Module

You can get the module in any one of the following ways;

• Download the latest release from GitHub
• Or install with npm; npm install subscribe-email
• Or install with Bower; bower install subscribe-email

Example Usage

To get started, you'll need to include the script on your page, create a placeholder element, and initialize the module. After you include subscribe-email.js in your project, here's some minimal code you can use to get started quickly;

<div id="subscribe-form"></div>

<script>
window.onload = function() {
  var mySubscribeForm = new SubscribeEmail({
    element: '#subscribe-form',
    service: 'universe',
    key: 'your-api-key-here'
  });
};
</script>

At a minimum, you'll need to change the service and key parameters to match your needs. (Note: MailChimp uses url instead of key).

Advanced Usage

Options

The module can be configured with several optional parameters passed to it's constructor. Here is the full list of options:

element

(Required) A DOM element, jQuery element, or selector string to refer to the placeholder element.

alerter

SubscribeEmail uses blocks-alerter to display response messages from the different mailing list platforms. By default, alerts will be prepended to element and use Alerter's default template. You can turn alerts off by setting alerter: false. If you would like to override the defaults, you can pass in an options hash with options for Alerter. Example;

var mySubscribeForm = new SubscribeEmail({
  element: '#subscribe-form',
  service: 'universe',
  key: 'your-api-key-here',
  alerter: {
    prependTo: 'body',
    template: myCustomTemplate
  }
});

service

(Required) The mailing list platform you are using. Available options are mailchimp, sendgrid and universe.

key

(Required) A string of the API key for your mailing list platform. (This is not required for MailChimp. Instead, you'll have to use url).

url

(Required for MailChimp) A string of the <form action=""> attribute generated by MailChimp which contains MailChimp authentication information. You can get this from MailChimp under "Signup forms > Embedded form code > Naked" and copying just the value from the <form action=""> attribute. It should follow this format: http://{username}.{data center}.list-manage.com/subscribe/post?u={user id}&id={list id}.

submitText

A string to be used on the form's submit button (defaults to "Subscribe").

template

If you want to customize the markup, you can override the default markup by passing in a compiled handlebars template using this option. See the default template for a starting point to work from. A custom template will not work without a form tag that contains id="{{id}}" data-subscribe-instance="{{instanceId}}" and an email input that contains name="{{emailName}}". (Defaults to false).

namespace

Out of the box, the module will generate BEM markup with the namespace subscribe-email, but you can use this option to override the default without passing in a custom template.

Events

You can easily integrate the messages into other parts of your page by listening for events being emitted from the SubscribeEmail instance;

mySubscribeForm.on('subscriptionMessage', function(payload){
  console.log(payload);
});

You can listen for the following events;

subscriptionMessage

Fires whenever the mailing list provider returns a response (both success and failure). The message will be passed to this event as a string.

subscriptionError

This event will fire if the mailing list provider returns an error. Specific details about the error will be passed to the event as a payload object. Note: the payload object may vary depending on the service.

subscriptionSuccess

This event will fire if the mailing list provider returns a confirmation that the email address has been added to the list. Specific details will be passed to the event as a payload object. Note: the payload object may vary depending on the service.