Prevent Angular From Escaping Html

When developing web applications using Angular, it's essential to ensure that user inputs don't get executed as code, preventing potential security vulnerabilities. One common concern is preventing Angular from escaping HTML code, which can lead to various security risks. In this article, we will walk you through simple and effective ways to prevent Angular from escaping HTML in your application.

Angular automatically escapes HTML content by default for security reasons. This default behavior helps prevent cross-site scripting (XSS) attacks, where an attacker injects malicious scripts into your application. However, there are instances when you may need to render HTML content inside your Angular application without escaping it, like displaying formatted text or embedding video content.

To prevent Angular from escaping HTML, you can use the `innerHTML` property binding or the `DomSanitizer` service provided by Angular. The `innerHTML` property allows you to bind a property containing HTML code directly to an element, rendering it as unescaped HTML. Here's a simple example of how you can use `innerHTML` in your Angular component:

import { Component } from '@angular/core';

@Component({
  selector: 'app-html-renderer',
  template: `
    <div></div>
  `
})
export class HtmlRendererComponent {
  htmlContent = '<h1>Hello, <strong>Angular!</strong></h1>';
}

In this example, the `htmlContent` property contains an HTML string that gets rendered within a `

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

@Component({
  selector: 'app-html-sanitizer',
  template: `
    <div></div>
  `
})
export class HtmlSanitizerComponent {
  unsanitizedHtml = 'alert("XSS Attack!");';
  sanitizedHtml: SafeHtml;

  constructor(private sanitizer: DomSanitizer) {
    this.sanitizedHtml = this.sanitizer.bypassSecurityTrustHtml(this.unsanitizedHtml);
  }
}