Angular Can'；t绑定到'；ngIf&x27；因为它不是'；t'的已知属性；分区'；生产中建造

我可以在本地运行。仅在生产生成中获取错误

我用过

 import { CommonModule } from '@angular/common';
 imports:      [  CommonModule ]

完整错误如下所示

client:101 Template parse errors:enter code here`Can't bind to 'ngIf' since it isn't a known property of 'div'. 
("move" class="transport-remove">Remove</a></div>
         <div id="carTypeDiv_1" class="veh-inv-out" [ERROR ->]*ngIf="vehicleData.vesselType == 'road'">
            <ul id="carTypeList_1" class="veh-slides">
    "): VehicleDirective@10:52
Property binding ngIf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("t:" (click)="removeField($event)" title="Remove" class="transport-remove">Remove</a></div>
         [ERROR ->]<div id="carTypeDiv_1" class="veh-inv-out" *ngIf="vehicleData.vesselType == 'road'">
            <ul "): VehicleDirective@10:9
Can't bind to 'ngForOf' since it isn't a known property of 'option'. ("l)]="vehicleData.makeSelect" (change)="appendModel($event.target.value)">
                  <option [ERROR ->]*ngFor="let make of vehicle.makes">{{make}}</option>
               </select>
            </div>
"): VehicleDirective@28:26
Property binding ngForOf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("[(ngModel)]="vehicleData.makeSelect" (change)="appendModel($event.target.value)">
                  [ERROR ->]<option *ngFor="let make of vehicle.makes">{{make}}</option>
               </select>
            </d"): VehicleDirective@28:18
Can't bind to 'ngForOf' since it isn't a known property of 'option'. ("t" id="modelSelect" [(ngModel)]="vehicleData.modelSelect" class="prefixbox">
               <option [ERROR ->]*ngFor="let model of vehicle.models">{{model}}</option>
            </select></div>
            <br c"): VehicleDirective@36:23
Property binding ngForOf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("delSelect" id="modelSelect" [(ngModel)]="vehicleData.modelSelect" class="prefixbox">
               [ERROR ->]<option *ngFor="let model of vehicle.models">{{model}}</option>
            </select></div>
         "): VehicleDirective@36:15
Can't bind to 'ngForOf' since it isn't a known property of 'option'. ("refixbox">
                        <option value="">SELECT</option>
                        <option [ERROR ->]*ngFor="let year of vehicle.years">{{year}}</option>
                     </select>
                 "): VehicleDirective@47:32
Property binding ngForOf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("class="prefixbox">
                        <option value="">SELECT</option>
                        [ERROR ->]<option *ngFor="let year of vehicle.years">{{year}}</option>
                     </select>
         "): VehicleDirective@47:24
Can't bind to 'ngForOf' since it isn't a known property of 'option'. ("ateSelect" [(ngModel)]="vehicleData.stateSelect" class="prefixbox">
                        <option [ERROR ->]*ngFor="let state of vehicle.regStates">{{state}}</option>
                     </select>
           "): VehicleDirective@55:32
Property binding ngForOf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("" id="stateSelect" [(ngModel)]="vehicleData.stateSelect" class="prefixbox">
                        [ERROR ->]<option *ngFor="let state of vehicle.regStates">{{state}}</option>
                     </select>
   "): VehicleDirective@55:24
Can't bind to 'ngForOf' since it isn't a known property of 'option'. ("lorSelect" [(ngModel)]="vehicleData.colorSelect" class="prefixbox">
                        <option [ERROR ->]*ngFor="let color of vehicle.colors">{{color}}</option>
                     </select>
              "): VehicleDirective@68:32
Property binding ngForOf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("" id="colorSelect" [(ngModel)]="vehicleData.colorSelect" class="prefixbox">
                        [ERROR ->]<option *ngFor="let color of vehicle.colors">{{color}}</option>
                     </select>
      "): VehicleDirective@68:24

client:101模板解析错误：在此处输入代码`无法绑定到'ngIf'，因为它不是'div'的已知属性。
（“移动”class=“运输移除”>移除
]*ngIf=“vehicleData.vesselType=”道路“>

"): VehicleDirective@10:52
属性绑定ngIf未被嵌入模板上的任何指令使用。请确保属性名称拼写正确，并且所有指令都列在“@NgModule.declarations”中（“t:”（单击）=“removeField（$event）”title=“Remove”class=“transport Remove”>Remove
[错误->]

]*ngFor=“让车辆制造.makes”>{{make}
"): VehicleDirective@28:26
嵌入模板上的任何指令都不使用属性绑定。确保属性名称拼写正确，并且所有指令都列在“@NgModule.declarations”中。（“[（ngModel）]=“vehicleData.makeSelect”（更改）=“appendModel（$event.target.value）”>
[错误->]{make}
[错误->]{{model}
"): VehicleDirective@36:15
无法绑定到“ngForOf”，因为它不是“option”的已知属性。（“Xbox”>
挑选
]*ngFor=“出租车辆年份.years”>{{year}
"): VehicleDirective@47:32
嵌入模板上的任何指令都不使用属性绑定ngForOf。请确保属性名称拼写正确，并且所有指令都列在“@NgModule.declarations”中（“class=”prefixbox“>
挑选
[错误->]{year}
"): VehicleDirective@47:24
无法绑定到“ngForOf”，因为它不是“option”的已知属性（“ateSelect”[（ngModel）]=“vehicleData.stateSelect”class=“prefixbox”>
]*ngFor=“let state of vehicle.regStates”>{{state}
"): VehicleDirective@55:32
嵌入模板上的任何指令都不使用属性绑定。确保属性名称拼写正确，并且所有指令都列在“@NgModule.declarations”中。（“id=”stateSelect“[（ngModel）]=”vehicleData.stateSelect“class=”prefixbox“>
[错误->]{{state}
"): VehicleDirective@55:24
无法绑定到“ngForOf”，因为它不是“option”的已知属性（“lorSelect”[（ngModel）]=“vehicleData.colorSelect”class=“prefixbox”>
]*ngFor=“let color of vehicle.colors”>{{color}
"): VehicleDirective@68:32
嵌入模板上的任何指令都不使用属性绑定。确保属性名称拼写正确，并且所有指令都列在“@NgModule.declarations”中。（“id=”colorSelect“[（ngModel）]=”vehicleData.colorSelect“class=”prefixbox“>
[错误->]{{color}
"): VehicleDirective@68:24

---

原因是什么。我已经验证了许多解决方案。找不到解决方案。相同的代码在本地运行正常。

添加浏览器模块后，其工作正常

 import { BrowserModule } from '@angular/platform-browser';
 @NgModule({
     imports: [BrowserModule ]
  })

---

您应该在根组件或相关组件中添加CommonModule

从“@angular/common”导入{CommonModule}；

另外，将

CommonModule

添加到@NgModule的

imports

属性中，并将组件添加到

declarations

属性中

@NgModule({
声明：[
应用组件
],
进口：[
公共模块
],
提供者：[]，
引导：[AppComponent]
})

我遇到了完全相同的错误，我包括了CommonModule和BrowserModule，但我仍然在浏览器上看到了相同的错误消息

---

最后，我发现问题的原因是我忘记将我的组件添加到app.module.ts，以防其他人处理相同的行为。

如果模块的

声明中未包含您的组件，也可能发生此错误：

从'@angular/core'导入{NgModule}；
从“@angular/common”导入{CommonModule}；//如果以上方法都不起作用，那么其他解决方案就是重新启动对我有效的
ng SERVICE
。或者在拔出头发之前先尝试此方法

PS：这不是OP的问题，因为他正在生产中，这只是用于开发环境。
在div元素上使用ngIf的地方添加HTML模板代码这是否回答了您的问题？看起来Angular的错误处理可能“知道”（或猜测）ngIf是它自己的指令之一，并且“知道”它在BrowserModule中。浏览器控制台中的错误消息可能会提示“是否已导入BrowserModule”？Angular IMHO中最大的缺点可能是出错时错误消息没有多大帮助。这对我很有效！非常感谢您提到这一点！！！Ca我不相信这不是一个更被接受的答案。顺便说一句，如果你想知道在哪里，它应该在导入中：导入：[……，modalpage模块]，错误消息太糟糕了，我们应该如何找到这个lol。谢谢！我认为这是最好的答案。谢谢，伙计！在浏览了所有帖子之后。最后阅读了这篇评论，我觉得没有检查app.modules.ts很傻。谢谢你的回答谢谢-这对我很有效，我遇到了这个问题，在重新启动
ng serve
！我也是。我将表单控件移动到另一个组件中，并启动了g