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Most people do not understand the knowledge points of this article "how to use the tag of HTML", so the editor summarizes the following content, detailed content, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "how to use the tag of HTML" article.

Attributes of the tag

Before we introduce the use of tags, we need to understand the attributes of tags; the attributes of tags are:

Src attribute: used to specify the URL of the external script file and to link the external script file.

Type attribute: used to specify the MIME type of the script

Description:

1. MIME type consists of two parts: media type and subtype. For JavaScript, the MIME type is "text/javascript".

2. Some values of MIME type are:

"text/javascript", "text/ecmascript", "application/ecmascript", "application/javascript", "text/vbscript".

Async attribute: this is a Boolean value that specifies that the script is executed asynchronously; it is only compatible with HTML5.

Defer property: this is also a Boolean value that indicates that the script is executed after the document is parsed.

The use of labels

There are two ways to use tags, so let's introduce them in detail:

1. Embed script code within the tag

Tags can be used within or tags to write script code inside the tags to embed them in HTML documents. Let's take a look at an example of embedding script code in an HTML document:

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Alert ("php Chinese website\ nURL: www.php.cn")

Effect picture:

2. Use the src attribute to link an external script file

Tags can be used to link external script files through the src attribute, so let's take a look at linked external script files:

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Note: the HTML document and external script file in the example-jquery.min.js are in the same folder in the same directory:

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