Cheerio is a very popular tool for parsing HTML and XML in NodeJs. It is fast, flexible, and easy to use. Since it implements a subset of JQuery, it's easy to start using Cheerio if you're already familiar with JQuery.

Here is how to search for HTML code with Cheerio in NodeJs.

Searching by elements

To search for particular HTML code using Cheerio in Node.js, you can use the $ function to load the HTML string or file and then use CSS selectors to find the desired element or elements.

In Node.js, you can check if an object is empty by using the Object.keys() method to get an array of the object's keys, and then checking the length of the array.

Here's an example:

const obj = {};

if (Object.keys(obj).length === 0) {
  console.log('Object is empty');
} else {
  console.log('Object is not empty');
}

In the above code, Object.keys(obj) returns an empty array because the obj object has no keys. So Object.keys(obj).length will be 0, indicating that the object is empty.