How can I easily change the background image using Angular 4?

I am currently using inline styles to set the background image on my website.

<div [ngStyle]="{background: 'url(' + section.backgroundSrc + ') no-repeat'}">

But I want to find a cleaner solution, perhaps dynamically setting the path in an external stylesheet with Angular. I am unsure of how to accomplish this though.

Answer №1

To achieve this effect, CSS files cannot be used directly. However, you can simplify your existing code like so:

<div [style.background]="'url(' + section.backgroundSrc + ') no-repeat'"></div>

If angular raises security concerns, you may need to sanitize the input. In that case, you would do something similar to the following:

<div [style.background]="background"></div>

In your TypeScript file:

this.background= 
this.sanitization.bypassSecurityTrustStyle(`url(${this.section.backgroundSrc}) no-repeat`);

Answer №2

Shoutout to Harsha Sampath for the tip. This is what I did:

[style.backgroundImage]="'url('+urlToImage+')'"

It's working like a charm in Angular 8, where urlToImage is a dynamic string property of the component.

The rest of the background settings are set in stone in the CSS:

background-repeat: no-repeat;
background-position:center center;
background-size: 100% 100%;

Answer №3

Successfully implemented this code in my project.

[style.backgroundImage]="'url('+MEDIA_URL +'/dir/'+data.image+')'"

The MEDIA_URL variable represents the base URL where uploaded files are stored.

Using Angular CLI version 6.1.3 and Angular version 6.1.2 for development.

Answer №4

Handling this situation is simple and effective.

[ngStyle]="{'background': 'url(' +(user.photo ? user.photo : '')+') no-repeat 0 0 / cover'}"

Answer №5

In this code snippet, the HTML section contains a div element with a style attribute that sets the background to "background".

Meanwhile, in the TypeScript section, we can see that the background property is being set using a URL pointing to an SVG image of a waterfall for the specified section.

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