在同一组件中重复html

时间:2018-11-27 16:48:54

标签: angular ng-template

我正在寻找在组件中多个位置重复相同标记的方法。我知道我可以使用一个新组件,但是我正在寻找不太严重的东西。

HTML

        <nav class="pages">
            <ul class="inline">
                <li 
                    *ngFor="let p of pages; let i = index;"
                    [ngClass]="{'active': page.current_page == i+1}"
                    (click)="onPageChange(i+1, $event)"
                >{{i+1}}</li>
            </ul>
        </nav>

有没有一种方法可以使用ng-template在同一组件中的多个位置重复进行相同的标记...如下所示

<div id="header"> <ng-template [innHTML]="#pages"></ng-template> </div>
<div id="content">...</div>
<div id="footer"> <ng-template [innHTML]="#pages"></ng-template> </div>

<ng-container #pages>
    <ul class="inline">
        <li *ngFor="let p of pages; let i = index;" [ngClass]="{'active': page.current_page == i+1}" (click)="onPageChange(i+1, $event)">{{i+1}}</li>
    </ul>
</ng-container>

2 个答案:

答案 0 :(得分:2)

您可以插入带有ng-template Angular元素和ngTemplateOutlet指令的ng-container的内容。

<div id="header">
  <ng-container *ngTemplateOutlet="pages; context: { text: 'value1' }"></ng-container>
</div>
<div id="content">...</div>
<div id="footer">
  <ng-container *ngTemplateOutlet="pages; context: { text: 'value2' }"></ng-container>
</div>

<ng-template #pages let-value="text">
  <div>The value is {{value}}</div>
  <ul class="inline">
    <li *ngFor="let p of pages; let i = index;" [ngClass]="{'active': page.current_page == i+1}" (click)="onPageChange(i+1, $event)">{{i+1}}</li>
  </ul>
</ng-template>

答案 1 :(得分:0)

创建一个在模板中包含html的子组件,并根据需要在(父)组件中多次使用它,如下所示:

子组件:

import { Component, OnInit, Input } from '@angular/core';

@Component({
  selector: 'app-child-comp',
  template: `
    <nav class="pages">
        <ul class="inline">
            <li 
                *ngFor="let p of pages; let i = index;"
                [ngClass]="{'active': page.current_page == i+1}"
                (click)="onPageChange(i+1, $event)"
            >{{i+1}}</li>
        </ul>
    </nav>
  `,
  styleUrls: ['./child-comp.component.css']
})
export class ChildCompComponent implements OnInit {
  @Input() pages;

  constructor() { }

  ngOnInit() {
  }

  onPageChange(index, event) {
  }

}

父项:

<div id="header">
  <app-child-comp [pages]="pages"></app-child-comp>
</div>
<div id="content">...</div>
<div id="footer">
  <app-child-comp [pages]="pages"></app-child-comp>
</div>