获取错误参考错误：未定义userAgent，在角度4生产版本​​中（角度4）

Question

您好iam在角度4开发项目，它在本地和开发环境中工作正常。但是当我在做生成生成构建生成。但一些错误是在前端控制台投掷。下面

是配置细节：

"apps": [ 
    { 
     "root": "src", 
     "outDir": "dist", 
     "assets": [ 
     "assets", 
     "favicon.ico" 
     ], 
     "index": "index.html", 
     "main": "main.ts", 
     "polyfills": "polyfills.ts", 
     "test": "test.ts", 
     "tsconfig": "tsconfig.app.json", 
     "testTsconfig": "tsconfig.spec.json", 
     "prefix": "app", 
     "styles": [ 

     "../node_modules/bootstrap/scss/bootstrap.scss", 
     "../node_modules/font-awesome/css/font-awesome.css", 
     "../node_modules/izimodal/css/iziModal.min.css", 

     "../node_modules/flatpickr/dist/flatpickr.css", 
     "assets/bootstrap-daterangepicker-master/daterangepicker.scss", 
     "assets/css/style.css", 
     "assets/css/common.css", 
     "app.scss", 
     "assets/css/select2.min.css" 
     ], 
     "scripts": [ 
     "../node_modules/jquery/dist/jquery.min.js", 
     "assets/js/codebird.js", 
     "../node_modules/popper.js/dist/umd/popper.min.js", 
     "assets/bootstrap-daterangepicker-master/moment.js", 
     "../node_modules/bootstrap/dist/js/bootstrap.min.js", 
     "assets/js/flexibility.js", 
     "../node_modules/flatpickr/dist/flatpickr.js", 
     "../node_modules/izimodal/js/iziModal.min.js", 
     "assets/bootstrap-daterangepicker-master/daterangepicker.js", 
     "assets/js/select2.full.min.js" 
     ], 
     "environmentSource": "environments/environment.ts", 
     "environments": { 
     "dev": "environments/environment.ts", 
     "staging": "environments/environment.staging.ts", 
     "prod": "environments/environment.prod.ts", 
     "uat": "environments/environment.uat.ts", 
     "local": "environments/environment.local.ts", 
     "develop": "environments/environment.dev.ts" 
     } 
    } 
    ], 
    "e2e": { 
    "protractor": { 
     "config": "./protractor.conf.js" 
    } 
    }, 
    "lint": [ 
    { 
     "project": "src/tsconfig.app.json" 
    }, 
    { 
     "project": "src/tsconfig.spec.json" 
    }, 
    { 
     "project": "e2e/tsconfig.e2e.json" 
    } 
    ], 
    "test": { 
    "karma": { 
     "config": "./karma.conf.js" 
    } 
    }, 
    "defaults": { 
    "styleExt": "scss", 
    "component": { 
    } 
    } 

我收到以下错误：

错误的ReferenceError：未定义的userAgent。

我在脚本中使用它在codebird.js使用的文件已签。 但无法解决问题。

Answer 1

看起来像izimodel已经定义了一个变量userAgent及其错误原因。

广场副本在你的js文件夹和使用，在，而不是一个node_modules izimodel.min.js。

然后更换

(userAgent=navigator.userAgent,userAgent.indexOf("MSIE ")>-1||userAgent.indexOf("Trident/")>-1) 

随着

(navigator.userAgent.indexOf("MSIE ")>-1||navigator.userAgent.indexOf("Trident/")>-1) 

这将解决这个问题