Reveal the differences and similarities between src and href

src and href are two commonly used attributes in HTML, used to specify the link address of external resource files. They have some similarities and differences in usage, syntax and scope of application. Let’s uncover these two attributes together!

First, let’s take a look at the src attribute. src (source) is used to specify the link address of an external script file, image file, audio file or video file. src is usually used for tags, <script> tags, <iframe> tags and other elements to introduce external files. </script>

For example, to insert a picture into a web page, we can use the following code:

<img src="image.jpg" alt="图片">

In this example, the src attribute specifies the link address of the picture file, and the browser will The address loads and displays the image.

Now, let’s take a look at the href attribute. href (hypertext reference) is used to specify the link address of a hyperlink. href is mainly used for tags to create hyperlinks to external pages or anchors within the page.

For example, to create a hyperlink pointing to the Baidu homepage, we can use the following code:

<a href="https://www.baidu.com">百度</a>

In this example, the href attribute specifies the target address of the hyperlink. When the user clicks the link Will jump to the specified page.

Comparing src and href, they have the following similarities and differences:

1. Semantic differences:

   • src represents the address of the resource , is used to embed references to external resources.
   • href represents the target address of the hyperlink and is used to create the link.
2. ##Differences in applicable scope:
   The src attribute applies to elements such as , <script>, <iframe>, etc. Used to import external files. The <li></script>
href attribute is applicable to elements such as
3. , , , and is used to create links.
4. Difference in loading behavior:
   The src attribute will load the specified resource file immediately when the browser parses HTML.
   • The href attribute will load the specified target page only when the user clicks the link.

It should be noted that although the usage scenarios of src and href are different, they are not absolute rules. Some elements can also use these two attributes at the same time. For example, the element can use href to specify an external style sheet file and src to specify an external script file.

To summarize, src and href are commonly used attributes in HTML, used to specify the link address of external resource files. They have some similarities and differences in semantics, scope of application, and loading behavior. Correctly understanding their differences can help us better use HTML to build web pages.

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