react-crate-app在ie11报语法错误,不兼容ie11

1.安装react-app-polyfill

2.在src/index.js中引入import 'react-app-polyfill/ie11'; import 'react-app-polyfill/stable';

react-crate-app在ie11报语法错误,不兼容ie11

3.在pa.在package.json中搜索browserslist,并添加“ie 11”

react-crate-app在ie11报语法错误,不兼容ie11

4.重启项目