Angular [innerHtml]：如何使用[innerHtml]指令在元素内渲染其他元素

Question

An element with the [innerHtml] directive just seems to add the declared html string inside that element, and nothing more;

through this stackblitz , i was trying to add something inside such an element, to no avail;

<div [innerHTML]="safeHtml(item.isi)"><p>new word - will not show</p></div>

Is there a way to add some more HTML inside an element with the [innerHtml] directive? In other words, how can i make the stackblitz in the example work?

Answer 1

why are you using [innerHTML] since your item.isi is not an html element; we use innerHTML to render a html result; like if your item.isi is <p>My name</p> ; if it is not a html element no use of using innerHTML, you can simply use {{item.isi}} inside your div, so you can render other html elements also

Answer 2

you can try by using ElementRef , if you want to append element not want to replace full html ,

html

<div #Container>
    add here 
 </div> 

ts file

export class AppComponent implements AfterViewInit  {
  @ViewChild('Container') container: ElementRef ;

  content = [
   {judul: "Judul 1", isi:"<div id='title_1'>Isinya</div>"},
   {judul: "Judul 2", isi:"<div id='title_2'>pranay</div>"},
  ];

  ngAfterViewInit() { 
   this.content.forEach( (item,index) =>{
      this.container.nativeElement.insertAdjacentHTML('beforeend', `<div id="title${index}">${item.judul}</div>`);
this.container.nativeElement.insertAdjacentHTML('beforeend', `${item.isi}`);

   });
}

however elementref is not recommended way.

output of above code

you can see it adding content after , add here one by one

Find : Working Demo

---

Instead of using function in your component (its not working as your html-template trying to pass html to your typscript file) , you should create pipe as below

html.pipe.ts

import { Component, Pipe, PipeTransform } from '@angular/core';
import { DomSanitizer } from '@angular/platform-browser';

@Pipe({
    name: 'html'
})
export class HtmlPipe implements PipeTransform {
    constructor(private sanitized: DomSanitizer) {}
    transform(value) {
        return this.sanitized.bypassSecurityTrustHtml(value);
    }
}

and use it like

html

<div *ngFor="let item of content">
 <h3 [innerHTML]="item.judul | html ">add</h3>
 <div [innerHTML]="item.isi | html "><p>new word</p></div>
</div>

Find : Working Demo

Answer 3

As i understand your question, using inner html replaces the inner html. Therefore the old value is replaced by the value from your object.

i understand you are following this approch as you want to display the value from the object.

So a better approach is using pipes. May be. Just check this answer. If it helps. Click here