Question

我可以在本地运行。仅在生产构建中获取错误。

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

是什么原因。我已经验证了很多解决方案找不到灵魂。相同的代码与本地工作正常。

Answer 1

添加浏览器模块后，工作正常。

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

Answer 2

我有完全相同的错误，并且同时包含了CommonModule和BrowserModule，但在浏览器中仍然看到相同的错误消息。

最后，我发现问题的原因是我忘记将组件添加到app.module.ts中，以防其他人正在处理相同的行为。

Answer 3

如果您的组件未包含在模块的declarations部分中，也会发生此错误：

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';            // <-- required

import { InventoryRoutingModule } from './inventory-routing.module';
import { InventoryComponent } from './pages/inventory/inventory.component';

@NgModule({
  declarations: [InventoryComponent],                      // <-- In my case, this was missing
  imports: [CommonModule, InventoryRoutingModule]
})
export class InventoryModule {}

Answer 4

您应该在根组件或相关组件中添加CommonModule，

php artisan vendor:publish --provider="Spatie\CookieConsent\CookieConsentServiceProvider" --tag="lang"

此外，将import { CommonModule } from "@angular/common";添加到@NgModule的CommonModule属性，并将您的组件添加到imports属性。

declarations

Answer 5

如果上述方法均无效，则其他解决方案只是重启您的ng serve，这对我有用。或者也许先尝试这种方法再拔出头发。

Answer 6

就我而言，我在 app.module.ts 中已经有一个同名的组件，这导致我的新组件没有被正确解析并导致“无法绑定到 'ngIf'”，基本上相同的问题如上所述，缺少 app.module.ts 中的声明

解决方案：

现有组件：

import { DialogComponent } from './common/button-popup/dialog/dialog.component';

我必须为新组件添加别名

import { DialogComponent } from './common/button-popup/dialog/dialog.component';
import { DialogComponent as DialogGenericComponent } from './common/dialog/dialog.component';

无法绑定到＆＃39; ngIf＆＃39;因为它不是“div”的已知属性。在生产建设

6 个答案: