In-depth analysis: What is the difference between link and import?
When developing web pages or applications, we often need to introduce external CSS files or JavaScript libraries to enhance or customize our code. In this process, link and import are two commonly used methods. Although their purpose is to introduce external resources, there are some differences in specific usage.
Syntax and location:
link: Use the link tag to link external resources to the HTML file, usually located at the head of the HTML document ( head) part. Its syntax is as follows:
<link rel="stylesheet" type="text/css" href="styles.css">
import: Use the import statement to introduce external resources into the CSS file, usually at the top of the CSS file. Its syntax is as follows:
@import url("styles.css");
Loading method:
Scope of application:
Compatibility:
Introduction sequence:
To sum up, although both link and import can be used to introduce external resources, there are differences in syntax, loading method, scope of application, compatibility and introduction order. Some minor differences. Depending on the specific needs and environment, choosing the appropriate introduction method can improve the efficiency and performance of front-end development.
The following is a specific code example using link and import:
HTML file (index.html):
<link rel="stylesheet" type="text/css" href="styles.css">Hello World
CSS file (styles.css):
@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@300&display=swap"); body { font-family: 'Roboto', sans-serif; }
In the above example, link is used to introduce an external CSS file, and the import statement is used to introduce the Google Fonts style sheet in the CSS file. In this way, our web pages can use the Roboto font.
I hope this article can provide a deeper understanding of the difference between link and import, and help readers make more informed choices in actual development.
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