There are many friends who can't distinguish between link and @import, and this article will explain it to you at one time.Link and @import are both methods used to introduce external stylesheets, but there are a few differences:
1.Syntax:
Link is an HTML tag, and @import is a CSS rule, so Link can be used in HTML and @import can only be used in CSS.
2.Loading Order:
link loads the external stylesheet at the same time as the page loads, and @import loads the external stylesheet after the page is loaded, which can cause the page to load slower.
3.Compatibility:
Link works fine in all browsers, while @import may not be supported in some older browsers.
When we want to introduce an external stylesheet, we can use tags or @import rules.
Examples of using tags are as follows:
Explain this is a paragraphIn the example above, tags are used to introduce a file called stylesCSS.
Examples of using @import rules are as follows:
Explain * maincss */@import url("styles.css");bodyIn the example above, @import rule is used in mainCSS introduces a new feature called stylesCSS.
Whether you're using tags or @import rules, you can bring in an external stylesheet.
Tags and @import rules can be used in different scenarios, and you can choose the appropriate method according to your specific needs
Scenarios that use tags:
1.Introduce external stylesheets in HTML documents.
2.When you need to bring in multiple external stylesheets at the same time, you can use multiple tags.
3.When a stylesheet needs to load at the same time as the page loads, it can improve page load speed.
Scenarios that use @import rules:
1.Introducing an external stylesheet in a CSS file allows you to use @import rules in a query to introduce different stylesheets.
2.You can use @import rules when you need to dynamically load a stylesheet based on conditions.
3.In some cases, using @import rules gives you more control over the order and conditions in which a stylesheet is loaded.
Tags are better for introducing external stylesheets in HTML documents, while @import rules are better for introducing external stylesheets in CSS files, and stylesheets can be loaded dynamically based on conditions.
Using tags and @import rules has different effects on page performance
1.Tags:
Parallel loading: When using tags to bring in external stylesheets, the browser can load multiple external stylesheets in parallel, improving page load speed.
Page load speed: Because tags can load stylesheets at the same time as the page loads, page content can be rendered faster, improving the user experience.
2.@import Rules:
Serial loading: When you use @import rules to ingest external stylesheets, the browser loads the stylesheets in the order in which the rules are @import, and multiple stylesheets cannot be loaded in parallel, which may affect the page loading speed.
Page load speed: Because @import rules can't load multiple stylesheets in parallel, it can lead to slower page load speeds, which affects the user experience.
Tags have a more beneficial impact on the performance of a web page because they can load multiple external stylesheets in parallel, improving page load speed. In contrast, @import rules can cause stylesheets to load serially, affecting page load speeds. Therefore, when optimizing the performance of a web page, it is recommended to prioritize the use of tags to introduce external stylesheets.