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Build a website scraper to my specification

I need someone to use javascript to scrape websites for me

I will give you a list of websites to scrape for me

You will need to follow the function signatures I provide and also their return types

Example

You are tasked to scrape product results from an ecommerce store

The first task is to create a function to get a list of the items. If the results are paginated you must also get the results from the subsequent pages

This function will be called getListings. It will return data in the following format

[

{

name: 'Item name',

url: itemUrl,

price: itemPrice

},

...other items

]

The next task will be to create a function for scraping the individual pages themselves. This function will be called on each item returned from getListings.

This function will be called scrapePage. It will receive the following object as an argument

{

url: itemUrl,

$: cheerioObject,

existingData: dataScrapedFromGetListingFunction

}

And it will return data in the following format

{

...existingData,

description: itemDescription,

}

scrapePage will merge the existing data with its own data and return the result.

The final result should pass the isValidItem check (see declarations below)

Example declarations

interface ScrapedItem {

[key:string]: string | number | undefined,

url?: string,

name?: string,

price?: number,

description?: string,

}

interface FinalItem extends ScrapedItem {

url: string

}

interface Address {

county: String,

formatted: String

}

interface CheerioObject {} // see [login to view URL]

function getListings(

address: Address,

searchTerm: String

): [FinalItem] | null {

return [{

url: 'url'

}];

}

function scrapePage({

url,

$,

existingData,

}: {

url: String,

$: CheerioObject,

existingData: FinalItem,

}): FinalItem {

return {

url,

description: 'description',

...existingData,

};

}

function isNumber(_): _ is number { return typeof _ === 'number' }

function getMissingKeys(item: ScrapedItem) : Array<string> {

return ['url', 'description', 'name', 'price'].map((key: string) => {

if (!item[key]) {

return key;

}

return null;

}).filter((key: string | null):key is string => {

return !!key;

});

}

function isValidItem(item: ScrapedItem) {

const keys = getMissingKeys(item);

if ([login to view URL]) {

[login to view URL]('Item has missing keys: ', [login to view URL]());

return false;

}

return true;

}

In summary

I will give you a website to scrape.

You will create the getListings and scrapePage functions as defined above.

scrapePage will be used to iterate over the results from getListings but you do not need to provide the function that handles this iteration.

the final result from scrapePage must pass the isValidItem check that I will provide

This must be done using NodeJS 10 without typescript or any build process

You can use puppeteer on harder to scrape websites but it must also run in headless mode

The price will be for one website but we will need 50+ websites done

Evner: HTML, Javascript, Web Skrabning, node.js, CSS

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Om arbejdsgiveren:
( 0 bedømmelser ) Skerries, Ireland

Projekt ID: #22269092

9 freelancere byder i gennemsnit €34 på dette job

mantislin

Hi there, I am scraping expert. I have did more than 350+ scraping projects. Can we discuss more details about your project? then i can do example data or script for you, we can continue after you checked example dat Flere

€34 EUR på 1 dag
(356 bedømmelser)
7.7
schoudhary1553

Hello Sir, I am expert who understands the value of time. I pride myself in my attention to detail. I am very hard working and aim to deliver in less time than quoted. I want to make you, my employer happy without cha Flere

€90 EUR in 2 dage
(43 bedømmelser)
6.3
BitzageTechHub

Greetings, my name is Ahmad. I am Head of Client Relations and a web-developer myself. I would love to have an opportunity to discuss your project with you. With over 5 years of experience in mobile/web design and de Flere

€19 EUR in 7 dage
(6 bedømmelser)
4.4
greenguru2018

Hello, How are you? My pleasure to bid your project. I've read carefully your project description. I have more than five years experience in development related with your project. Your satisfaction with the project is Flere

€19 EUR in 7 dage
(16 bedømmelser)
4.3
designobsessed

Greetings! The website you’re looking for is totally do-able!. I can design/develop your preconceived website consisting of your intended pages and features as you want. I have more than 6-years of extensive experie Flere

€30 EUR in 3 dage
(18 bedømmelser)
5.8
solutionHDM

Hi There, I have 5+ years experience in HTML5, CSS3, BOOTSTRAP, JAVASCRIPT, JQUERY.I really desire to get this project. I am seeking better opportunities in long term job because I want to build a long term good relati Flere

€25 EUR in 2 dage
(13 bedømmelser)
4.0
Bobga

******** Greetings! I have gone through project and I know what you are looking for. I have done similar work in the past, so it won't take much of your time. Do not pay me until you get full satisfaction. I am lookin Flere

€50 EUR in 7 dage
(4 bedømmelser)
2.8
Pluton1

We have read your description and understood the job. we are interested and we can develop website for you. we have an experienced full stack developers with over 4 years of [login to view URL] have master command in WordP Flere

€19 EUR in 7 dage
(1 bedømmelse)
1.4
ossolsltd

Hi there! This is Saad from Ossols Ltd here. My bid is not to win this project but it's also to maintain a long-term relationship in the bright of this project. I have a cream of Software Engineers with Marketing Speci Flere

€19 EUR in 7 dage
(0 bedømmelser)
0.0