Sass or SCSS @mixin vs @extends vs Placeholder (%)

In the previous article we got to know in depth understanding of Sass/SCSS and how to use it.

If you are still new to Sass/SCSS then I recommend to check out my in depth article Sass or SCSS In-Depth Tutorial

In this article, I will be covering the difference between @mixin, @extends, and Placeholder.

---

@mixin

When you use the @mixin in the code it will replicate the code in all the using blocks

Example - 

@mixin wrapper{
  margin:0px auto;
  padding: 0px;
}

.w1{
  @include wrapper;
}

.w2{
  @include wrapper;
}

will be compiled to the following

.w1 {
  margin: 0px auto;
  padding: 0px;
}

.w2 {
  margin: 0px auto;
  padding: 0px;
}

The styles in the .w1 and .w2 styles is redundant

To overcome this problem we will use the @extend

---

@extend

Example

wrapper{
  margin:0px auto;
  padding: 0px;
}

.w1{
  @extend wrapper;
}

.w2{
  @extend wrapper;
}

will be compiled to the following

wrapper, .w1, .w2 {
  margin: 0px auto;
  padding: 0px;
}

Here the styles are not redundant, @extend is intelligent enough and adds wrapper,.w1,.w2

But there is one problem with this, if I don't use wrapper in my project then we are simply adding the redundant code in our style.

So to overcome this we will use Placeholder (%)

---

Placeholder (%)

Example -

%wrapper{
  margin:0px auto;
  padding: 0px;
}
.w1{
  @extend %wrapper;
}
.w2{
  @extend %wrapper;
}

will be compiled to the following

.w1, .w2 {
  margin: 0px auto;
  padding: 0px;
}

Articles For You

Generate Sitemap in PHP Laravel

Simple Way To Create Resourceful API Controller In Laravel

Install Apache Web Server On Ubuntu 20.04 / Linux & Manage It

Unable to prepare route [{fallbackPlaceholder}] for serialization. Uses Closure In Laravel

Create / Save / Download PDF From Blade Template In PHP Laravel

Redirect www to a non-www Website Or Vice Versa

Why You Should Run Cronjobs In Laravel?

@stack @push and @prepend In Laravel Blade

SummerNote WYSIWYG Text Editor

Website Speed and Performance Optimizations

Create Custom 404 Page In Laravel

Detect AdBlocker With Javascript And Increase Website Ads Revenue

Automate Repeating Tasks In Linux Server With Cronjobs

Setup Docker for NodeJs, MongoDB, MongoDB Compass

Install NGINX In Linux / Ubuntu And Managing