If JavaScript cannot be stored as static resources in Salesforce managed packages or has domain-specific loading requirements, follow these steps:
**For JavaScript That Cannot Be Static:**
1. **Avoid Dynamic Loading**: Do not dynamically load JavaScript from third-party servers or external domains.
2. **Host Content Yourself**: Host the dynamic content on your own server and embed it into a Visualforce page using an iframe. This ensures the content is not associated with a Salesforce domain.
3. **Follow Security Guidelines**: Avoid using JSONP and instead use HTML5 CORS with specific domain whitelisting to maintain security compliance.
**For Domain-Specific Loading Requirements:**
1. **Use Static Resources**: Store JavaScript code in static resources within your Salesforce package. Dynamically loading JavaScript from third-party domains is not allowed.
2. **Host on Your Domain**: If domain-specific loading is required, host the dynamic content on your own domain and embed it into a Visualforce page using an iframe.
3. **Allowed Exceptions**: Some exceptions, like Google Maps and Stripe libraries, are permitted for dynamic loading. For other cases, ensure compliance with Salesforce's security policies.
4. **Document API Callouts**: Thoroughly document any JavaScript-based API callouts and provide necessary credentials for testing during the security review process.
**Acceptable Approaches for Dynamic JavaScript:**
If dynamic JavaScript cannot be made static, Salesforce recommends hosting the dynamic content externally and embedding it in a Visualforce page using an iframe. This approach ensures the content is not directly associated with the Salesforce domain. Always ensure compliance with Salesforce's security guidelines and provide justifications for exceptions during the security review process.
These practices help ensure security and proper handling of JavaScript in managed packages while supporting a successful security review.