//注意:package.json添加中文注释会报错
{
    "name":"mydemo",//项目名称
    "version":"1.0.0",//项目版本号
    "description":"A Vue.js project",//项目描述
    "author":"",//项目作者
    "scripts":{//制定了运行脚本命令行的缩写 比如npm run build此命令号实际是运行node bulid/build.js
        "dev":"webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
        "start":"npm run dev",
        "build":"node bulid/build.js"
    },
    "dependencies":{//项目运行时所依赖的模块及其版本号
        "vue":"^2.5.1",
        "vue-router":"^3.0.1"
    },
    "devDependencies":{//项目开发所依赖的模块及其版本号
        "autoprefixer":"^7.1.1",
        "babel-core":"^6.22.1"
    },
    "engines":{//项目需要的node版本
        "node":">=6.0.0",
        "npm":">=3.0.0"
    },
    "browserslist":[//浏览器兼容
        ">1%",
        "last 2 versions",
        "not ie <= 8"
    ]
}