在build文件夹
1. 找到webpack.dev.conf.js，再找到HtmlWebpackPlugin，添加favicon:‘favicon.ico路径’
new HtmlWebpackPlugin({filename: 'index.html',template: 'index.html',favicon:'./nationalEmblem.png', //这里设置图标路径inject: true})2. 然后找到webpack.prod.conf.js，再找到HtmlWebpackPlugin，添加favicon:‘favicon.ico路径’
new HtmlWebpackPlugin({filename: config.build.index,template: 'index.html',favicon: './nationalEmblem.png', //这里设置图标路径inject: true,minify: {removeComments: true,collapseWhitespace: true,removeAttributeQuotes: true// more options:// https://github.com/kangax/html-minifier#options-quick-reference},
