javascript - How to render <> using [innerhtml] in Angular? - Stack Overflow

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I've been trying to render a simple string using [innerHtml] but I keep failing. Basically my issue is when I use <>. For example if my string is:

someText = "abc <1231> color"; 

I can render

abc <1231> color

but if my string is: "abc <ment1 color" I can only render

abc color

How can I render my string using [innerHtml]?

LIVE DEMO

I've been trying to render a simple string using [innerHtml] but I keep failing. Basically my issue is when I use <>. For example if my string is:

someText = "abc <1231> color"; 

I can render

abc <1231> color

but if my string is: "abc <ment1 color" I can only render

abc color

How can I render my string using [innerHtml]?

LIVE DEMO

• javascript
• angular

Share Improve this question Follow edited Jul 16, 2021 at 20:29 halfer 20.4k1919 gold badges109109 silver badges202202 bronze badges asked Sep 30, 2020 at 20:05 DevmixDevmix 1,87888 gold badges4444 silver badges8585 bronze badges

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 2

If you only want to insert generic text, not actual HTML, you should use the following syntax:

<div>{{someText}}</div>

If it is important for you to use [innerHTML] for any reason, you could use someText = 'abc <1231> color'.replace(/</g, '&lt;') to strip all your HTML tags and thus resolve your issue. You can then NOT use any HTML in your element.

To allow specific HTML elements, you could use something like this:

const someText = '<b>Bold Text <123></b>'.replace(/<((b|i|u|strong|a)\s|>)/g, '&lt;$1';

Anyway, it is highly unsafe to insert user generated HTML content into your ponents. You can see this documentation to see, why.

I'd like to add a bit of caution here, because there are a few concerns with the two earlier answer submissions.

First off, I would avoid using innerText or innerHTML pletely if you're just trying to display generic text data. Angular has built in data-binding for that very reason and I'd remend using that. As was mentioned in the first part of @nrausch example.

Secondly, If for some reason your ultimate goal is to display HTML via the innerHTML property to the user, the correct approach is to sanitize the HTML using Angular's built in DOMSanitizer

Here is an example of how to use the DomSanitizer:

First create a sanitization pipe:

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

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

Second use the pipe in your ponents HTML:

<div><strong>Binding Example:</strong> {{ name }}</div>

<div [innerHtml]="myHTML | safeHtml"></div>

Here is a StackBlitz Example that shows you both methods.

There is 2 solutions

1. Using innerText instead of innerHTML.

2. Instead of using <> on someText, you can use <>to show<&>` letters.

someText = "abc <1234> color";

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