After extracting our information, we will save it into a file, this task will be done with the help of fs module.Now, we have the HTML of the web page, our task is to extract the useful information from it, so we will traverse the DOM tree and will find out the selectors.Then, we will send a HTTP request to the URL and then server of the desired website will respond with an web page, it will be done with the request module.First we will import all our required modules.
Here in this screenshot we can see all our dependencies have been listed within the dependencies object, It implies we have successfully installed all of them in our current project directory.
Cheerio twitter install#
This can be done in the single line as well using NPM: npm install request cheerio fsĪfter successfully installing modules our package.json will have structure like this : To install the modules locally using NPM simply do:
Which contains all information about the modules, author, github repository and its versions as well.įor know more about package.json please visit this link: Step 2: Open the terminal inside the project directory and then type the following command: npm init.Step 1: create a folder for this project.It can be done by the following command: npm i package_nameįor this task we will use the local installation: Locally Installation: If we install any module locally then we can use it only within that particular project directory.It can be done by the following command: npm i -g package_name Globally Installation: If we install any module globally then we can use it anywhere in our system.The easiest way to install modules in Nodejs is using NPM. fs: For reading or writing the data into the file.cheerio: For parsing DOM and extracting HTML of web page.request: For sending HTTP request to the URL.Modules to be used for crawling in Nodejs: Difference between var and let in JavaScript.Hide or show elements in HTML using display property.
Cheerio twitter how to#
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