#### 1. Install Cheerio:

First, ensure Cheerio is installed in your Node.js project. If not installed, you can install it via npm:

```bash
npm install cheerio
```

#### 2. Load HTML Content:

You can use Node.js's `fs` module to read local HTML files or an HTTP client library like `axios` to fetch web page content. Here, I'll demonstrate an example using `axios` to retrieve online HTML:

```javascript
const axios = require('axios');
const cheerio = require('cheerio');

async function fetchHTML(url) {
    const { data } = await axios.get(url);
    return data;
}
```

#### 3. Use Cheerio to Extract `<script>` Tag Content:

After obtaining the HTML, load it with Cheerio and extract all `<script>` tags:

```javascript
async function extractScripts(url) {
    const html = await fetchHTML(url);
    const $ = cheerio.load(html);

    $('script').each((i, elem) => {
        console.log($(elem).html());
    });
}
```

In this function, `$('script')` selects all `<script>` tags, the `each` method iterates through them, and `$(elem).html()` retrieves the JavaScript code within each tag.

#### 4. Call the Function:

Finally, invoke the `extractScripts` function with a URL:

```javascript
extractScripts('https://example.com');
```

#### Example Explanation:

Suppose we extract scripts from a simple HTML page with the following content:

```html
<!DOCTYPE html>
<html>
<head>
    <title>Example Page</title>
</head>
<body>
    <h1>Welcome to Example Page</h1>
    <script>
        console.log('This is inline JavaScript code');
    </script>
    <script src="example.js"></script>
</body>
</html>
```

Here, the `extractScripts` function outputs `console.log('This is inline JavaScript code');` and an empty string, as the second `<script>` tag references an external file without inline code.

In this manner, Cheerio enables developers to efficiently extract and process `<script>` tag content from web pages, making it particularly valuable for web scraping applications.

How do get script content using cheerio

1个答案

1. Install Cheerio:

2. Load HTML Content:

3. Use Cheerio to Extract `<script>` Tag Content:

4. Call the Function:

Example Explanation:

你的答案

How do get script content using cheerio

1个答案

1. Install Cheerio:

2. Load HTML Content:

3. Use Cheerio to Extract <script> Tag Content:

4. Call the Function:

Example Explanation:

你的答案

3. Use Cheerio to Extract `<script>` Tag Content: