安装npm i lhh-first-npm功能描述upperCase可以使字符串的首字母大写 实例:const test = require('lhh-first-npm');// 输出Bob log(test.upperCase('bob'))1 dependent4 versions@everything-registry/sub-chunk-20631.0.31 year ago1.0.21 year ago1.0.11 year ago1.0.01 year ago