# Setting up Chargebee JS

# Inserting chargebee.js script in your application

Include the following script in your HTML page. You need to do this only once per page.

<script src="https://js.chargebee.com/v2/chargebee.js"></script> 
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# Initializing a Chargebee instance

Inside your JavaScript code, initialize chargebee with the publishable key (opens new window) once the page is loaded and get 'chargebee instance' object. This object is used further to create components.

Example:

var cbInstance = Chargebee.init({
	site: "site-name", // your test site
	domain: "https://mybilling.acme.com" // this is an optional parameter.
    publishableKey: "test__"
})
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Learn more about ​​initializing a Chargebee instance.