ES6模块化遇到的跨源问题Access to script at ‘X.js‘ from origin ‘null‘ has been blocked by CORS policy... 解决方法
a.js中使用export导出flag,sum:letflag=true;functionsum(num1,num2){returnnum1+num2}if(flag){console.log(sum(1,2));}export{flag,sum}b.js中使用import导入flag,sum:import{flag,sum}from'./a.js';console.log(flag);if(fl