How to use SASS styles in Angular projects? The following article will introduce to you how to use SASS styles in Angular. I hope it will be helpful to you!
In the Angular Custom Instructions Tooltip article, we said that we would publish an article about sass
styles, and now it coming.
One of the three front-end swordsmen, Cascading Style Sheets (CSS), is the polish of the HTML
skeleton. However, the styles we write natively will have a lot of repeated code, and the logic is not clear.
Then, we can write and maintain it through the extension language of CSS
. The two CSS
extension languages that are currently popular in the front-end world are less
and sass
. This article explains sass
.
less is similar, sass is more mature
SASS
provides two writing syntaxes, one is .scss
is the suffix, the other is .sass
is the suffix.
-
.scss
is the suffix, and the syntax is{}
. -
.sass
is the suffix, and the syntax is Shrinking method
Recommended to use .scss
Project integration
angular
The project is generated using scaffolding. In the step of adding styles, you will be asked how to write styles and let you choose:
Select SCSS
, then confirm, it’s that simple.
Writing styles in angular
can be divided into component styles and global styles. [Related tutorial recommendations: "angular tutorial"]
Component style
Component style means that the component is owned individually and other components will not take effect, such as , you generate the component through ng compoent demo
:
- demo.component.ts - demo.component.html - demo.component.scss - deom.component.spec.ts
where demo.compoent.scss
is the style sheet of deom
.
Global styles
angular
Projects generated by scaffolding store global styles in the src/style.scss
file by default . The styles modified in this file will affect the styles of the entire application.
Sass Key Grammar
For daily development work, let’s introduce the more important content.
1. Use variables
Using variables allows you to call them on multiple pages or in multiple places on the page.
// _varible.scss // **** COLORS **** $black: #000000; $white: #ffffff; $dark-green: #007f7f; // **** usage **** $primary-color: $dark-green;
We manage the variable method in a file. When we need to use it, we can directly @import
import and use it:
@import "path/to/varible.scss"; #demo { color: $primary-color; // 调用 }
2. Use nesting
When using css
styles, we need to write styles for different elements. We need to consider the level of the elements and use different styles. The weight is modified.
The skeleton is now as follows:
<div id="demo"> <div class="inner"> <span class="prefix">Mr.</span> </div> <div class="inner"> <span class="name">Jimmy<span> </div> </div>
The style is now as follows:
#demo .inner .prefix { color: red; font-size: 11px; } #demo .inner .name { font-size: 14px; }
Then we can use nested writing, with clear logic and easy reading:
#demo { .inner{ .prefix { color: red; font-size: 11px; } .name { font-size: 14px; } } }
3. Use calculation
sass
provides a series of operators, such as , -, *, /, %
, you can use Just like writing javascript
variable operations, you can also bring units:
width: 100px / 400px * 100%l;
In addition to these basic operators, sass
also provides many methods, such as String
Function:
to-upper-case('italic'); // ITALIC
Another example of changing the transparency of a color:
#demo { background-color: transparentize($black, 0.5) }
4. Use the mixin mixer
When writing styles, we will call the same style content in multiple classes. For example:
.demo { font-size: 12px; color: red; } .another_demo { font-size: 12px; color: blue; }
We use mixin
to rewrite:
@mixin common-style { font-size: 12px; } .demo { @include common-style; color: red; } .another_demo { @include common-style; color: blue; }
Use mixin
to extract the public code, which is convenient for us to change, and change one place in multiple places Change. Of course, extend
Serve also has this effect.
5. Use extend inheritance
For example, we can continue the style of the previous class:
Original skeleton and style:
<span class="prefix name">Hello, Jimmy.</span>
.prefix { font-size: 12px; } .name { color: red; }
After rewriting:
<span class="name">Hello, Jimmy.</span>
.prefix { font-size: 12px; } .name { @extend .prefix color: red; }
In daily development, mastering the above skills is enough for you to deal with style writing with ease~
[End]
Updated For more programming related knowledge, please visit: Programming Teaching! !
The above is the detailed content of How to use SASS styles in Angular projects. For more information, please follow other related articles on the PHP Chinese website!

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.

C and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment