scrape-it-core

The core scraping functionality of scrape-it.

Usage no npm install needed!

<script type="module">
  import scrapeItCore from 'https://cdn.skypack.dev/scrape-it-core';
</script>

README

scrape-it-core

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The core scraping functionality of scrape-it.

:cloud: Installation

# Using npm
npm install --save scrape-it-core

# Using yarn
yarn add scrape-it-core

:clipboard: Example

const scrapeIt = require("scrape-it-core")

// Promise interface
const data = scrapeIt(`
    <h1 class='heading'>Hello World</h1>
    <img src="test.jpg" />
    <p>Lorem ipsum dolor sit amet...</p>
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
        <li>5</li>
        <li><i>6</i></li>
    </ul>
`, {
    title: ".heading"
  , desc: "p"
  , avatar: {
        selector: "img"
      , attr: "src"
    }
  , items: {
        listItem: "ul > li"
      , data: {
            content: {
                how: "text"
            }
        }
    }
})

console.log(data)
// { title: 'Hello World',
//   desc: 'Lorem ipsum dolor sit amet...',
//   avatar: 'test.jpg',
//   items:
//    [ { content: '1' },
//      { content: '2' },
//      { content: '3' },
//      { content: '4' },
//      { content: '5' },
//      { content: '6' } ] }

:question: Get Help

There are few ways to get help:

  1. Please post questions on Stack Overflow. You can open issues with questions, as long you add a link to your Stack Overflow question.
  2. For bug reports and feature requests, open issues. :bug:
  3. For direct and quick help, you can use Codementor. :rocket:

:memo: Documentation

scrapeItCore($, opts)

The core scraping functionality of scrape-it.

Scrapes the data in the provided element.

For the format of the selector, please refer to the Selectors section of the Cheerio library

Params

  • Cheerio|String $: The input element or the HTML as a string.

  • Object opts: An object containing the scraping information. If you want to scrape a list, you have to use the listItem selector:

    • listItem (String): The list item selector.
    • data (Object): The fields to include in the list objects:
      • <fieldName> (Object|String): The selector or an object containing:
        • selector (String): The selector.
        • convert (Function): An optional function to change the value.
        • how (Function|String): A function or function name to access the value.
        • attr (String): If provided, the value will be taken based on the attribute name.
        • trim (Boolean): If false, the value will not be trimmed (default: true).
        • closest (String): If provided, returns the first ancestor of the given element.
        • eq (Number): If provided, it will select the nth element.
        • texteq (Number): If provided, it will select the nth direct text child. Deep text child selection is not possible yet. Overwrites the how key.
        • listItem (Object): An object, keeping the recursive schema of the listItem object. This can be used to create nested lists.

    Example:

    {
       articles: {
           listItem: ".article"
         , data: {
               createdAt: {
                   selector: ".date"
                 , convert: x => new Date(x)
               }
             , title: "a.article-title"
             , tags: {
                   listItem: ".tags > span"
               }
             , content: {
                   selector: ".article-content"
                 , how: "html"
               }
             , traverseOtherNode: {
                   selector: ".upperNode"
                 , closest: "div"
                 , convert: x => x.length
               }
           }
       }
    }
    

    If you want to collect specific data from the page, just use the same schema used for the data field.

    Example:

    {
         title: ".header h1"
       , desc: ".header h2"
       , avatar: {
             selector: ".header img"
           , attr: "src"
         }
    }
    

Return

  • Object The scraped data.

:yum: How to contribute

Have an idea? Found a bug? See how to contribute.

:sparkling_heart: Support my projects

I open-source almost everything I can, and I try to reply to everyone needing help using these projects. Obviously, this takes time. You can integrate and use these projects in your applications for free! You can even change the source code and redistribute (even resell it).

However, if you get some profit from this or just want to encourage me to continue creating stuff, there are few ways you can do it:

  • Starring and sharing the projects you like :rocket:

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:scroll: License

MIT © Ionică Bizău