检查 function 是否存在于其他 javascript 模块中

Question

I have a web page that loads two javascript modules: <script type="module> . I want, in one module to check if a function exists in the other. I can see no way to do this. The firefox debugger identifies the functions in the module where I'm checking, but I can find no way to examine the functions in the other. Is there some way to do this?

Answer 1

Each module has its own top-level scope . In other words, top-level variables and functions from a module are not seen in other scripts.