var dropdown = document.getElementsByClassName("dropdown-btn");
    var i;
    for (i = 0; i < dropdown.length; i++) {
        dropdown[i].addEventListener("click",function () {
            var dropdownContent = this.nextElementSibling;
            if (dropdownContent.style.display === "block") {
                dropdownContent.style.display = "none";
            } else {
                dropdownContent.style.display = "block";
            }
        });
    }

.tabs{
    position: absolute;
    top: 280px;
    width: 100%;
}
.dropdown-btn{
    text-decoration: none;
    border: none;
    background: none;
    display: block;
    padding-left: 53px;
    font-family: Work Sans;
    font-style: normal;
    font-weight: bold;
    font-size: 24px;
    line-height: 28px;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: #F8F7F3;
}
.dropdown-container{
    text-decoration: none;
    padding-left: 63px;
    display: none;
    background-color:#20737A;
    width: 100%;
    margin: auto;
}
.dropdown-container a{
    text-decoration: none;
    display: block;
    padding-bottom: 10px;
    font-weight: bold;
    font-size: 18px;
}

<div class="sidenav">
    <div class="items" id="item-0"><a href="#">The Senior Survey</a></div>
    <div class="tabs">
        <button class="items dropdown-btn">ACADEMICS</button>
        <div class="dropdown-container">
            <a href="#" id="comp-1">Department</a>
            <a href="#" id="comp-2">CPI</a>
        </div>

解决方法

<div class="sidenav">
    <div class="items" id="item-0"><a href="#">The Senior Survey</a></div>
    <div class="tabs">
        <button class="items dropdown-btn" (click)="showDropdown=!showDropdown">ACADEMICS</button>
        <div class="dropdown-container" *ngIf="showDropdown">
            <a href="#" id="comp-1">Department</a>
            <a href="#" id="comp-2">CPI</a>
        </div>

@Component({...})
export class YourComponent {
  showDropdown:boolean = false;
}

Angular 12 升级问题与包 @angular-devkit/builder-angular 中的 css-what 版本相关

如何解决Angular 12 升级问题与包 @angular-devkit/builder-angular 中的 css-what 版本相关

我正在升级我的 Angular 项目。我已按照此处 https://update.angular.io/ 提到的所有步骤进行操作。在那之后，除了与@angular-devkit/builder-angular 相关的一个高问题之外，我能够解决所有问题。

这是导致构建失败的问题。

高度拒绝服务

封装css-what

已在 >=5.0.1 中修补

依赖@angular-devkit/build-angular [dev]

Path @angular-devkit/build-angular > css-minimizer-webpack-plugin
> cssnano > cssnano-preset-default > postcss-svgo > svgo >
css-select > css-what ```

found 3 vulnerabilities (2 moderate,1 high) in 1651 scanned packages
3 vulnerabilities require manual review. See the full report for details.


I have tried updating using all the version @angular-devkit/builder-angular available,but no luck. You can see some of the version which i have tried below.

```-- @angular-devkit/build-angular@12.0.2 
-- css-minimizer-webpack-plugin@3.0.0
-- cssnano@5.0.6 -- cssnano-preset-default@5.1.3
-- postcss-svgo@5.0.2 -- svgo@2.3.0
-- css-select@3.1.2 -- css-what@4.0.0

-- @angular-devkit/build-angular@12.0.5 
-- css-minimizer-webpack-plugin@3.0.0
-- cssnano@5.0.6 -- cssnano-preset-default@5.1.3
-- postcss-svgo@5.0.2 -- svgo@2.3.0
-- css-select@3.1.2 -- css-what@4.0.0

-- @angular-devkit/build-angular@12.1.0-next.6 
-- css-minimizer-webpack-plugin@3.0.1
-- cssnano@5.0.6 -- cssnano-preset-default@5.1.3
-- postcss-svgo@5.0.2 -- svgo@2.3.0
-- css-select@3.1.2 -- css-what@4.0.0 ```

In above @angular-devkit/build-angular is excepting css-what version should be >= 5.0.1 which I am not able to find.

Which version of @angular-devkit/builder-angular@? i need to install so that css-what >= 5.0.1 . Then only that high issue will get resolve.

```FYI
Node version - v12.18.2
npm - 6.14.5
"dependencies": {
"@angular-devkit/core": "^12.0.2","@angular/animations": "^12.0.2","@angular/common": "^12.0.2","@angular/compiler": "^12.0.2","@angular/core": "^12.0.2","@angular/forms": "^12.0.2","@angular/localize": "^12.0.2","@angular/platform-browser": "^12.0.2","@angular/platform-browser-dynamic": "^12.0.2","@angular/platform-server": "^12.0.2","@angular/router": "^12.0.2","@angular/service-worker": "^12.0.2","@fortawesome/fontawesome-free": "^5.15.3","@ng-bootstrap/ng-bootstrap": "^9.1.2","@ng-select/ng-select": "^5.1.0","@ngrx/store-devtools": "^6.1.0","ag-grid": "^18.1.2","ag-grid-angular": "^18.1.0","ag-grid-community": "^19.0.0","angular2-text-mask": "^9.0.0","autoprefixer": "^10.2.6","classlist.js": "^1.1.20150312","compass-mixins": "^0.12.10","core-js": "^2.6.12","jquery": "^3.6.0","moment": "^2.29.1","ng6-toastr": "^6.0.0","ngx-bootstrap": "^6.2.0","ngx-moment": "^3.2.0","ngx-spinner": "^6.1.2","ngx-toastr": "^14.0.0","postcss-scss": "^3.0.5","rxjs": "^6.6.7","rxjs-compat": "^6.6.7","zone.js": "^0.11.4"
},"devDependencies": {
"@angular-devkit/build-angular": "^12.1.0-next.6","@angular/cli": "^12.0.2","@angular/compiler-cli": "^12.0.2","@angular/language-service": "^12.0.2","@ngrx/store": "^12.1.0","@types/jasmine": "^3.7.6","@types/jasminewd2": "^2.0.9","@types/node": "^15.6.1","codelyzer": "^6.0.2","jasmine-core": "^3.7.1","jasmine-spec-reporter": "^7.0.0","jspm": "^0.16.53","karma": "^6.3.3","karma-chrome-launcher": "^3.1.0","karma-coverage-istanbul-reporter": "^3.0.3","karma-jasmine": "^4.0.1","karma-jasmine-html-reporter": "^1.6.0","protractor": "^7.0.0","ts-node": "^8.3.0","tslint": "^6.1.0","typescript": "^4.2.4"
},```

>quote Thanks in advance,early reply will be appreciated.

解决方法

Angular 12.0.5 HMR 不工作，不重新加载模块，不重新加载页面实时重新加载，Angular 11.0.6 重新加载整个页面 调查 Angular 构建系统使用的版本配置 webpack使用 Angular 12.0.5 / next.6 时 - 没有帮助

如何解决Angular 12.0.5 HMR 不工作，不重新加载模块，不重新加载页面实时重新加载，Angular 11.0.6 重新加载整个页面 调查 Angular 构建系统使用的版本配置 webpack使用 Angular 12.0.5 / next.6 时 - 没有帮助

Angular HMR 不替换/重新加载组件

• 实时重载适用于 11.0.6 和 12.1.0-next.6。
• Angular 12.0.5 根本不会重新加载。

任何人都可以使用它并且可以提供一个有效的示例应用程序？

给定：一个简单的入门应用

（来自故事书 https://github.com/chromaui/intro-storybook-angular-template）

使用 Angular 11.0.6

然后 HMR 开箱即用并不能按预期工作，但完全重新加载可以（即启用 [WDS] 实时重新加载。）

更新到 Angular 12.0.5 时

然后 HMR 不会重新加载任何东西。 （根本没有实时重新加载）

12.0.5 行为：更新角度组件时不重新加载。

控制台错误（chrome）：

dev-server.js:60 Uncaught Error: [HMR] Hot Module Replacement is disabled.
    at Object.5033 (dev-server.js:60)
    at __webpack_require__ (bootstrap:19)
    at __webpack_exec__ (polyfills.js:12907)
    at polyfills.js:12908
    at webpackJsonpCallback (jsonp chunk loading:35)
    at polyfills.js:1

编辑组件 (HTML) 后，控制台“卡住”“[WDS] 应用热更新...”

更新到 Angular 12.1.0-next.6 时"

结果与 v11 相同（然后 HMR 开箱即用，但完全重新加载可以（即启用 [WDS] 实时重新加载。）

webpack-dev-server 是原因（可能与 webpack 5.3 一起）

经过一番挖掘，我意识到这与 webpack-dev-server 有关。

• https://github.com/webpack/webpack-dev-server/issues/2758

一个解决方案似乎是将 webpack 目标设置为 web（而不是浏览器）进行开发。或者使用测试版的 webpack-dev-server（即 4.0.0-beta.x）

"target: ''web'',

调查 Angular 构建系统使用的版本

在“node_modules/@angular-devkit/build-webpack/package.json”中使用了 webpack-dev-server。

对于 "@angular-devkit/build-angular": "~12.0.5"，webpack-dev-server 版本为 3.11.2

"peerDependencies": { "webpack": "^5.30.0","webpack-dev-server": "^3.11.2" },

将 Angular 更新为 v-next 时 对于 "@angular-devkit/build-angular": "^12.1.0-next.6"，webpack-dev-server 版本较低，为 3.1.4，与 ''build-angular'' v11 相同。 （可能是因为他们意识到实时重新加载的问题）

"peerDependencies": { "webpack": "^5.30.0","webpack-dev-server": "^3.1.4" },

使用 Angular 11 时 对于“@angular-devkit/build-angular”：“~0.1100.6”

"peerDependencies": { "webpack": "^4.6.0",

配置 webpack（使用 Angular 12.0.5 / next.6 时） - 没有帮助

根据以下资源配置，使用@angular-builders/custom-webpack

没有帮助。帮助！ =D

• https://github.com/just-jeb/angular-builders/tree/master/packages/custom-webpack#Custom-webpack-dev-server
• https://github.com/just-jeb/angular-builders/blob/master/packages/custom-webpack/examples/full-cycle-app/extra-webpack.config.ts

//package.json
"devDependencies": {
    "@angular-builders/custom-webpack": "^12.1.0",

//angular.json
//replace "builder" in "build" and "serve"
//add customWebpackConfig with path to a new config file
//"builder": "@angular-devkit/build-angular:browser"
    "architect": {
        "build": {
          "builder": "@angular-builders/custom-webpack:browser","options": {
            "customWebpackConfig": {
              "path": "extra-webpack.config.ts","replaceDuplicatePlugins": true
           },//...
         //replace   "builder": "@angular-devkit/build-angular:dev-server","serve": {
           "builder": "@angular-builders/custom-webpack:dev-server",

//extra-webpack.config.ts
import { Configuration } from "webpack";

export default {
    target:"web",// target: process.env.NODE_ENV === "development" ? "web" : "browserslist",} as Configuration;

解决方法

Angular 2+ (RTL) 如何将 HTML 标记添加到使用 Angular FormControl 构建的 HTML 输入值

如何解决Angular 2+ (RTL) 如何将 HTML 标记添加到使用 Angular FormControl 构建的 HTML 输入值

早上好，

问题： 我正在处理带有用户名和密码输入的 Angular 登录页面。

用户可以通过记住它来获取用户名，所以下次用户登录时，用户名将自动填充但带有掩码（计算）：user777 -> ****777

有一个使用 Angular FormControl 构建的输入，我需要向输入值添加一个 HTML 标记或其 unicode 值。

https://www.w3.org/International/articles/inline-bidi-markup/#lrmrlm

我有什么<input type="text"[formControl]="formControlVar"/>

我想达到什么目的：<input value="&lrm;****720">

为什么？ 在使用 !?* 等特殊字符时保持 RTL 显示和输入正确的行为。

这不起作用formControl.setValue(''‎****720'')，我找不到其他方法

JSfiddle 我想要实现的目标：http://jsfiddle.net/52tL8rzc/91/

我希望有人已经遇到了这个问题，可以给我一点启发:)

提前致谢。

angular j j angular j angular angular service service service j

mapService.getMapByUuid(mapUUID,isEditor).then(function(datas){
    fillMapDatas(datas);
});

function fillMapDatas(datas){
    if($scope.elements === undefined){
        $scope.elements = [];
    }
 //Here while debugging my unit test,'datas' contain the promise javascript object instead //of my real reponse.
   debugger;
    var allOfThem = _.union($scope.elements,datas.elements);

    ...

(function () {
'use strict';

var serviceId = 'mapService';

angular.module('onmap.map-module.services').factory(serviceId,[
    '$resource','appContext','restHello','restMap',serviceFunc]);

function serviceFunc($resource,appContext,restHello,restMap) {

    var Maps = $resource(appContext+restMap,{uuid: '@uuid',editor: '@editor'});

    return{          
        getMapByUuid: function (uuid,modeEditor) {
            var maps = Maps.get({'uuid' : uuid,'editor': modeEditor});
            return maps.$promise;
        }
    };
}

})();

describe('Map controller',function() {
var $scope,$rootScope,$httpBackend,$timeout,createController,MapService,$resource;

beforeEach(module('onmapApp'));

beforeEach(inject(function($injector) {
    $httpBackend = $injector.get('$httpBackend');
    $rootScope = $injector.get('$rootScope');
    $scope = $rootScope.$new();

    var $controller = $injector.get('$controller');

    createController = function() {
        return $controller('maps.ctrl',{
            '$scope': $scope
        });
    };
}));

afterEach(function() {
    $httpBackend.verifyNoOutstandingExpectation();
    $httpBackend.verifyNoOutstandingRequest();
});

var response = {"elements":[1,2,3]};

it('should allow user to get a map',function() {

    var controller = createController();
    $httpBackend.expect('GET','/onmap/rest/map/MY-UUID?editor=true')
        .respond({
            "success": response
        });


// hope to call /onmap/rest/map/MY-UUID?editor=true url and hope to have response as the fillMapDatas parameter
    $scope.getMapByUUID('MY-UUID',true); 

    $httpBackend.flush();
});
});

var mapService,$q,$rootScope;

beforeEach(inject(function (_mapService_,_$httpBackend_,_$q_,_$rootScope_) {
  mapService = mapService;
  $httpBackend = _$httpBackend_;
  $q = _$q_;
  $rootScope = _$rootScope_;

  // expect the actual request
  $httpBackend.expect('GET','/onmap/rest/map/uuid?editor=true');

  // react on that request
  $httpBackend.whenGET('/onmap/rest/map/uuid?editor=true').respond({
    success: {
      elements: [1,3]
    }
  });
}));

it('should return a promise',function () {
  expect(mapService.getMapUuid('uuid',true).then).tobedefined();
});

it('should resolve with [something]',function () {
  var data;

  // set up a deferred
  var deferred = $q.defer();
  // get promise reference
  var promise = deferred.promise;

  // set up promise resolve callback
  promise.then(function (response) {
    data = response.success;
  });

  mapService.getMapUuid('uuid',true).then(function(response) {
    // resolve our deferred with the response when it returns
    deferred.resolve(response);
  });

  // force `$digest` to resolve/reject deferreds
  $rootScope.$digest();

  // make your actual test
  expect(data).toEqual([something]);
});

关于JS 文件不能在 angular 中工作，但可以在普通的 HTML、CSS+JS 中工作和为什么js文件不起作用的问题我们已经讲解完毕，感谢您的阅读，如果还想了解更多关于Angular 12 升级问题与包 @angular-devkit/builder-angular 中的 css-what 版本相关、Angular 12.0.5 HMR 不工作，不重新加载模块，不重新加载页面实时重新加载，Angular 11.0.6 重新加载整个页面 调查 Angular 构建系统使用的版本配置 webpack使用 Angular 12.0.5 / next.6 时 - 没有帮助、Angular 2+ (RTL) 如何将 HTML 标记添加到使用 Angular FormControl 构建的 HTML 输入值、angular j j angular j angular angular service service service j等相关内容，可以在本站寻找。