Angular 4 and the process of HTML encoding

Question

Angular 4 and the process of HTML encoding

Looking for assistance with html encoding in angular 4. I have product records stored in a database, with the fullDescription field in this particular format:

&lt;div align="justify"&gt;&lt;span&gt;

When using

<div *ngIf="product" [innerHTML]="product.fullDescription"></div>

, I'm receiving the following output:

<div align="justify"><span>

displayed as text. Is there a way to render this as innerHtml instead of plain text?

Thank you in advance.

angular typescript

Answer 1

Answer №1

To decode HTML entities in your component's class, you can create a function like the following:

decodeHTML(input) : any {
    return new DOMParser().parseFromString(input, "text/html").documentElement.textContent;
}

Then in the template, you can use it as follows:

<div *ngIf="content" [innerHTML]="decodeHTML(content.fullContent)"></div>

Answer 2

To decode HTML entities in your component's class, you can create a function like the following:

decodeHTML(input) : any {
    return new DOMParser().parseFromString(input, "text/html").documentElement.textContent;
}

Then in the template, you can use it as follows:

<div *ngIf="content" [innerHTML]="decodeHTML(content.fullContent)"></div>

Answer 3

Answer №2

I successfully completed this task using a custom pipe.

To achieve this, I created a component.ts file and added the following code:

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

@Pipe({ name: 'sanitizeHtml', pure: false })
export class SanitizeHtmlPipe implements PipeTransform {

  constructor(private sanitizer: DomSanitizer) { }

  transform(data): SafeHtml {
    return this.sanitizer.sanitize(SecurityContext.HTML, data);
  }
}

Next, in app.module.ts:

Import { SanitizeHtmlPipe } from './pagecontent/pagecontent.component';
Add SanitizeHtmlPipe to the declarations[] array

Finally, in component.html:

<span [innerHTML]="data | sanitizeHtml"></span>

And there you have it! Everything is now set up as needed. :) :)

Answer 4

I successfully completed this task using a custom pipe.

To achieve this, I created a component.ts file and added the following code:

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

@Pipe({ name: 'sanitizeHtml', pure: false })
export class SanitizeHtmlPipe implements PipeTransform {

  constructor(private sanitizer: DomSanitizer) { }

  transform(data): SafeHtml {
    return this.sanitizer.sanitize(SecurityContext.HTML, data);
  }
}

Next, in app.module.ts:

Import { SanitizeHtmlPipe } from './pagecontent/pagecontent.component';
Add SanitizeHtmlPipe to the declarations[] array

Finally, in component.html:

<span [innerHTML]="data | sanitizeHtml"></span>

And there you have it! Everything is now set up as needed. :) :)

Answer 5

Answer №3

The solution provided above was a step in the right direction towards resolving my issue. In addition to those adjustments, I found that making changes to the code below was crucial in successfully loading an encoded string of HTML with inline styles into a div element.

Modifications to the HTML code:

<div *ngIf="item" id="descriptionContainer" #descriptionContainer></div>

Updates made to the Angular component.ts file:

@ViewChild('descriptionContainer', { static: true }) descriptionContainer: ElementRef;

loadContent() {
    this.descriptionContainer.nativeElement.innerHTML = 
        this.toMarkup('&lt;div align="justify" style="color:blue;"&gt;&lt;span&gt;');
}

toMarkup(input) : any {
    return new DOMParser().parseFromString(input, "text/html").documentElement.textContent;
}

I believe these changes could be beneficial to someone facing a similar challenge. Thank you!

Answer 6

The solution provided above was a step in the right direction towards resolving my issue. In addition to those adjustments, I found that making changes to the code below was crucial in successfully loading an encoded string of HTML with inline styles into a div element.

Modifications to the HTML code:

<div *ngIf="item" id="descriptionContainer" #descriptionContainer></div>

Updates made to the Angular component.ts file:

@ViewChild('descriptionContainer', { static: true }) descriptionContainer: ElementRef;

loadContent() {
    this.descriptionContainer.nativeElement.innerHTML = 
        this.toMarkup('&lt;div align="justify" style="color:blue;"&gt;&lt;span&gt;');
}

toMarkup(input) : any {
    return new DOMParser().parseFromString(input, "text/html").documentElement.textContent;
}

I believe these changes could be beneficial to someone facing a similar challenge. Thank you!

Angular 4 and the process of HTML encoding

Answer №1

Answer №2

Answer №3

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