actor-hm-scraper: A JavaScript repository from OlehVeselov92

H&M Scraper

H&M Scraper is an Apify actor for extracting product data from hm.com fashion on line store. It allows you to scrape the whole site, specific categories and products. It is build on top of Apify SDK and you can run it both on Apify platform and locally.

Input
Output
Compute units consumption
Extend output function

Input

Field	Type	Description
startUrls	array	(required) List of Request objects that will be deeply crawled. The URLs can be the home page `https://www2.hm.com/en_us/index.html` or a combination of top-level categories, sub-categories and product page URLs
maxItems	number	(optional) Maximum number of product items to be scraped
extendOutputFunction	string	(optional) Function that takes a JQuery handle ($) as argument and returns data that will be merged with the default output. More information in Extend output function
proxyConfiguration	object	(optional) Proxy settings of the run. If you have access to Apify proxy, leave the default settings. If not, you can set `{ "useApifyProxy": false" }` to disable proxy usage

Notes on the input

When maxItems is set, the total results may be slightly greater. This is because the actor waits for pending requests to complete and because each product on the website may produce more than one item (derived from every color variants of the products).

INPUT Example:

{
  "startUrls": [
    { "url": "https://www2.hm.com/content/hmonline/en_us/women/products/dresses.html/" },
    { "url": "https://www2.hm.com/en_us/divided/new-arrivals/clothes.html" },
    { "url": "https://www2.hm.com/en_us/productpage.0850395001.html" }
  ],
  "maxItems": 1000,
  "extendOutputFunction": "($) => { return { test: 1234, test2: 5678 } }",
  "proxyConfiguration": {
    "useApifyProxy": true
  }
}

Output

Output is stored in a dataset. Each item is information about one product. Each color variant has a different product ID and produces a different item.

Example of one item output:

{
  "source": "hm",
  "itemId": "0448509001",
  "url": "https://www2.hm.com/en_us/productpage.0448509001.html",
  "scrapedAt": "2019-12-30T09:44:01.434Z",
  "brand": "H&M",
  "title": "Slim Mom Jeans",
  "categories": [
    "ladies",
    "jeans",
    "slim"
  ],
  "description": "5-pocket, ankle-length jeans in washed denim with a high waist. Slim legs with frayed, cut-off hems.",
  "composition": "Cotton 100%",
  "price": 29.99,
  "salePrice": 29.99,
  "currency": "USD",
  "color": "Black denim",
  "sizes": [
    "0",
    "2",
    "4",
    "6",
    "8",
    "10",
    "12",
    "14",
    "16",
    "18",
    "10P",
    "12P"
  ],
  "availableSizes": [
    "0",
    "2",
    "4",
    "6",
    "8",
    "10",
    "12",
    "14",
    "10P",
    "12P"
  ],
  "images": [
    {
      "url": "https://lp2.hm.com/hmgoepprod?set=source[/4f/c8/4fc85043dc0e4345797e827c4b572d57588412f6.jpg],origin[dam],category[ladies_jeans_slim],type[LOOKBOOK],res[m],hmver[1]&call=url[file:/product/main]"
    },
    {
      "url": "https://lp2.hm.com/hmgoepprod?set=source[/68/26/6826021d6271a28ac56041ea3e52109edf3f5b71.jpg],origin[dam],category[ladies_jeans_slim],type[LOOKBOOK],res[m],hmver[1]&call=url[file:/product/main]"
    },
    {
      "url": "https://lp2.hm.com/hmgoepprod?set=source[/ab/8c/ab8c393cc08603819a8532d3c4238ccaeafea7d1.jpg],origin[dam],category[ladies_jeans_slim],type[LOOKBOOK],res[m],hmver[1]&call=url[file:/product/main]"
    },
    {
      "url": "https://lp2.hm.com/hmgoepprod?set=source[/4a/38/4a3895532142d636c187e5a9a74480b767425ae7.jpg],origin[dam],category[ladies_jeans_slim],type[DESCRIPTIVESTILLLIFE],res[m],hmver[1]&call=url[file:/product/main]"
    },
    {
      "url": "https://lp2.hm.com/hmgoepprod?set=source[/75/a3/75a326a150146d0533fe1b0b59cbaee246675bdd.jpg],origin[dam],category[ladies_jeans_slim],type[DESCRIPTIVEDETAIL],res[m],hmver[1]&call=url[file:/product/main]"
    }
  ]
}

Compute units consumption

The actor uses CheerioCrawler which has low consumption.

With 4096MB of RAM set for the actor, expected compute units per 1000 scraped pages: 0.3199

Keep in mind that it is much more efficient to run one longer scrape (at least one minute) than more shorter ones because of the startup time.

Extend output function

You can use this function to update the default output of this actor. This function gets a JQuery handle $ as an argument so you can choose what data from the page you want to scrape. The output from this will function will get merged with the default output.

The return value of this function has to be an object!

You can return fields to achieve 3 different things:

Add a new field - Return object with a field that is not in the default output
Change a field - Return an existing field with a new value
Remove a field - Return an existing field with a value undefined

The following example will change the title field, remove the composition field and add a new field:

($) => {
    return {
        title: 'This is a new title',
        composition: undefined,
        myNewField: 1234
    }
}

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