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The method steps for nodejs to implement crawler: 1. Introduce the request and cheerio modules in the index.js file; 2. Define a target URL; 3. Use the request module to send a GET request to this URL and obtain the response data; 4. Through The $ symbol takes the content of which class; 5. Write the data to the json file; 6. Introduce the fs module provided by node; 7. Manually create the data.json file and store the data in it.
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