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This article mainly introduces HTML how to introduce JS code related knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe you will gain something after reading this HTML how to introduce JS code article, let's take a look at it.

I. use labels

We can use tags to introduce JavaScript code into HTML documents.

The code is as follows:

JS-(yisu.com) console.log ("use JavaScript")

When your browser runs this code, it will automatically recognize the.. in its JavaScript script code. And execute the code in, and then return the result to HTML and display it on the browser page.

In the browser page through the introduction of tags javaScript code, where the location of the tag can be in the tag and anywhere within the tag is feasible, but it is recommended that you put the tag in the tag. The advantage of this is that the javaScript code can be read after the entire page has been loaded.

Second, embed external JS files

Embedding an external JS file refers to writing JavaScript into an JS file, which saves the file with the suffix .js, and then embeds it into the HTML through the src syntax of the tag

The code is as follows:

JS-(yisu.com)

The w3cshool.js in the code is the external file name where we write the JavaScript, and the src attribute refers to the path to the external JavaScript file, which is usually a relative path.

Third, the introduction of JavaScript pseudo-url

In most browsers that support JavaScript scripts, we can embed JavaScript script code by calling statements through the pseudo-URL address of JavaScript. The general format of the pseudo-URL address: _ JavaScript:alert ("Click the button to jump out"). Here we can see that pseudo-URL address statements generally start with JavaScript and end with our requirements.

The code is as follows:

JS-(yisu.com)

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