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→Components and Interfaces in Mozilla
In Mozilla, there are several technologies used that build the codebase. You will find some lower level programming languages such as C/C++ in the core, and may find some higher level programming languages such as Javascript in extensions, components, etc...
These technologies are connected using the XPCOM, XPConnect, XPIDL, etc... With these frameworks, developers can break up software projects into components.
=== Component ===