Use es6 moudle to organize business modules. There are three modules a, b, and c. There is object obj in module a, and export {obj}, both module b and module c are import {obj}, then the b module needs to change the value of obj in the a module;
The traditional way is to directly modify the global variable, and the object exported by the a module in es6 is read-only for the b module. This How to solve the problem (without broadcasting)
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export出去的对象，其本身的引用是不能改，但是其内部的属性是可以修改的。你
exportJust create an object specifically for this type of shared variable.