Is there a reliable method to set a different key based on whether we are in development or production environments when working with client-side programs that lack an inherent runtime environment?
Appreciate any suggestions!
Is there a reliable method to set a different key based on whether we are in development or production environments when working with client-side programs that lack an inherent runtime environment?
Appreciate any suggestions!
To transfer an environment variable from the server to the client, one method is to inject it into the global namespace.
For instance, if you were implementing this in PHP:
<script>
var env = <?php echo $your_env_variable; ?>; // accessible globally
</script>
Subsequently, you will be able to retrieve that environment variable from any JavaScript files that run after that particular script tag.
In Node.js, a similar approach can be taken with templating languages like Jade:
script(type='text/javascript').
var env = passedInEnvVar
When working with nodejs, it is common practice to specify the environment using the "NODE_ENV" variable. Assuming you are using expressjs for serving HTML content, I will provide a solution tailored to that framework.
To achieve this in your view template (using EJS), simply add the following code:
var key = '<%= keys[process.env.NODE_ENV] %>';
Make sure to define a set of keys for each environment like so:
var keys = {
'development': 'dev-key',
'production': 'prod-key'
}
Instead of simply loading a different script, you have the option to generate the script dynamically by utilizing a GET parameter. For example, you can create a script URL like , and then modify the script's content based on that parameter using a server-side language such as PHP.
Another approach is to use rewrite rules on your web server in order to achieve a cleaner looking URL structure.
Placing a
<meta name='setting' content='<%= yourInput %>' />By following this approach, you can enforce a stricter Content-Security-Policy (eliminating inline-script) without needing to create a new server route for retrieving the necessary data.
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