Using electron Vue as a project involves three levels of global variables:
 Global variables of electron
 Global variables of HTML
 Global variable vuex of Vue
How to distinguish the definitions of these three levels of variables? For example, if you have a new global variable to be defined, where is the definition?
Regardless of business logic, you need to distinguish between the three global variablesScope。
Therefore, the use principle is as follows:
2. If you want to use the bidirectional binding function of data, of course, only vuex can choose;