投稿時間:2022-11-03 17:17:28 RSSフィード2022-11-03 17:00 分まとめ(20件)

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AWS	lambdaタグが付けられた新着投稿 - Qiita	cdkでLambda Layerを作成するときは、zip化しないでOK	https://qiita.com/yust0724/items/2eadab67c2e0c866c5e8	medium	2022-11-03 16:57:24
python	Pythonタグが付けられた新着投稿 - Qiita	cdkでLambda Layerを作成するときは、zip化しないでOK	https://qiita.com/yust0724/items/2eadab67c2e0c866c5e8	medium	2022-11-03 16:57:24
js	JavaScriptタグが付けられた新着投稿 - Qiita	Firebaseを使ったチャットアプリの導入と機能追加	https://qiita.com/yuki2898/items/6e20766c6a6e3239e4e1	firebase	2022-11-03 16:50:35
js	JavaScriptタグが付けられた新着投稿 - Qiita	【MapLibre GL JS】ポリゴンデータを表示する	https://qiita.com/asahina820/items/4fe5d4dbce28276d3474	daymapchallenge	2022-11-03 16:27:06
js	JavaScriptタグが付けられた新着投稿 - Qiita	【スケジューラ】PayPal Rest APIを利用してみる（Transaction:分析）	https://qiita.com/Miki_Yokohata/items/e76168697bf7b6adce4e	paypalrestapi	2022-11-03 16:21:41
Ruby	Rubyタグが付けられた新着投稿 - Qiita	【備忘録】【Rails】クラスメソッドとインスタンスメソッドの違い	https://qiita.com/asami___t/items/fff30aaa312b91343782	defself	2022-11-03 16:21:19
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS上にTerraform実行環境を最速で構築する	https://qiita.com/Catalyst3104/items/91a700e4cab601c97782	cloudformation	2022-11-03 16:45:59
AWS	AWSタグが付けられた新着投稿 - Qiita	Aurora の MySQL 8.0 互換で、EXPLAIN ANALYZE を触ってみた	https://qiita.com/sugimount-a/items/695651815c380cf889cb	aurora	2022-11-03 16:16:04
golang	Goタグが付けられた新着投稿 - Qiita	Go Fyneでandoroidアプリを作ってみた	https://qiita.com/ariichi88/items/74da711b1c296111b22d	andoroid	2022-11-03 16:20:09
Git	Gitタグが付けられた新着投稿 - Qiita	Gitインストール手順＜Windows向け＞	https://qiita.com/webjp/items/c67443e57d123583d7f2	手順	2022-11-03 16:54:55
Ruby	Railsタグが付けられた新着投稿 - Qiita	[Rails] action_argsでparamsを操る	https://qiita.com/moriw0/items/0965bb2e419127bd88eb	actionargs	2022-11-03 16:25:15
Ruby	Railsタグが付けられた新着投稿 - Qiita	【備忘録】【Rails】クラスメソッドとインスタンスメソッドの違い	https://qiita.com/asami___t/items/fff30aaa312b91343782	defself	2022-11-03 16:21:19
海外TECH	DEV Community	Web Scraping With Playwright: Tutorial for 2022	https://dev.to/oxylabs-io/web-scraping-with-playwright-tutorial-for-2022-4p	Web Scraping With Playwright Tutorial for You most probably won t get surprised if we tell you that in recent years the internet and its impact have grown tremendously This can be attributed to the growth of the technologies that help create more user friendly applications Moreover there is more and more automation at every step from the development to the testing of web applications Having good tools to test web applications is crucial Libraries such as Playwright help speed up processes by opening the web application in a browser and other user interactions such as clicking elements typing text and of course extracting public data from the web In this post we ll explain everything you need to know about Playwright and how it can be used for automation and even web scraping What is Playwright Playwright is a testing and automation framework that can automate web browser interactions Simply put you can write code that can open a browser This means that all the web browser capabilities are available for use The automation scripts can navigate to URLs enter text click buttons extract text etc The most exciting feature of Playwright is that it can work with multiple pages at the same time without getting blocked or having to wait for operations to complete in any of them It supports most browsers such as Google Chrome Microsoft Edge using Chromium Firefox Safari is supported when using WebKit In fact cross browser web automation is Playwright s strength The same code can be efficiently executed for all the browsers Moreover Playwright supports various programming languages such as Node js Python Java and NET You can write the code that opens websites and interacts with them using any of these languages Playwright s documentation is extensive It covers everything from getting started to a detailed explanation about all the classes and methods Support for proxies in PlaywrightPlaywright supports the use of proxies Before we explore this subject further here is a quick code snippet showing how to start using a proxy with Chromium Node js const   chromium    require playwright   const browser  await chromium launch Python from playwright async api import async playwrightimport asynciowith async playwright  as p browser  await p chromium launch This code needs only slight modifications to fully utilize proxies In the case of Node js the launch function can accept an optional parameter of LauchOptions type This LaunchOption object can in turn send several other parameters e g  headless The other parameter needed is proxy This proxy is another object with properties such as server username password etc The first step is to create an object where these parameters can be specified Node jsconst launchOptions     proxy       server        headless  false The next step is to pass this object to the launch function const browser  await chromium launch launchOptions In the case of Python it s slightly different There s no need to create an object of LaunchOptions Instead all the values can be sent as separate parameters Here s how the proxy dictionary will be sent Pythonproxy to use      server   browser  await pw chromium launch proxy proxy to use  headless False When deciding on which proxy to use it s best to use residential proxies as they don t leave a footprint and won t trigger any security alarms For example our own Oxylabs Residential Proxies can help you with an extensive and stable proxy network You can access proxies in a specific country state or even a city What s essential you can integrate them easily with Playwright as well Basic scraping with PlaywrightLet s move to another topic where we ll cover how to get started with Playwright using Node js and Python If you re using Node js create a new project and install the Playwright library This can be done using these two simple commands npm init ynpm install playwrightA basic script that opens a dynamic page is as follows const playwright  require playwright async    gt     const browser  await playwright chromium launch     headless  false  Show the browser        const page  await browser newPage   await page goto   await page waitForTimeout   wait for seconds  await browser close Let s take a look at the provided code the first line of the code imports Playwright Then an instance of Chromium is launched It allows the script to automate Chromium Also note that this script is running with a visible UI We did it by passing headless false Then a new browser page is opened After that the page goto function navigates to the Books to Scrape web page After that there s a wait of second to show the page to the end user Finally the browser is closed The same code can be written in Python easily First install Playwright using pip command pip install playwrightNote that Playwright supports two variations synchronous and asynchronous The following example uses the asynchronous API from playwright async api import async playwrightimport asyncio async def main   async with async playwright  as pw      browser  await pw chromium launch       headless False   Show the browser         page  await browser new page     await page goto      Data Extraction Code Here    await page wait for timeout   Wait for  second    await browser close     if name   main   asyncio run main This code is similar to the Node js code The biggest difference is the use of asyncio library Another difference is that the function names change from camelCase to snake case If you want to create more than one browser context or want to have finer control you can create a context object and create multiple pages in that context This would open pages in new tabs const context  await browser newContext const page  await context newPage const page  await context newPage You may also want to handle page context in your code It s possible to get the browser context that the page belongs to using the page context function Locating elementsTo extract information from any element or to click any element the first step is to locate the element Playwright supports both CSS and XPath selectors This can be understood better with a practical example Open in Chrome Right click the first book and select inspect You can see that all the books are under the article element which has a class product prod To select all the books you need to run a loop over all these article elements These article elements can be selected using the CSS selector product podSimilarly the XPath selector would be as following class product pod To use these selectors the most common functions are as following eval selector function   selects the first element sends the element to the function and the result of the function is returned eval selector function   same as above except that it selects all elements querySelector selector   returns the first element querySelectorAll selector return all the elements These methods will work correctly with both CSS and XPath Selectors Scraping textContinuing with the example of Books to Scrape after the page has been loaded you can use a selector to extract all book containers using the eval function const books  await page eval product pod  all items gt   run a loop here Now all the elements that contain book data can be extracted in a loop all items forEach book gt     const name  book querySelector h innerText Finally the innerText attribute can be used to extract the data from each data point Here s the complete code in Node js const playwright  require playwright   async    gt     const browser  await playwright chromium launch   const page  await browser newPage   await page goto   const books  await page eval product pod  all items gt       const data       all items forEach book gt         const name  book querySelector h innerText       const price  book querySelector price color innerText       const stock  book querySelector availability innerText       data push  name  price  stock          return data      console log books   await browser close The code in Python will be a bit different Python has a function eval on selector which is similar to eval of Node js but it s not suitable for this scenario The reason is that the second parameter still needs to be JavaScript This can be good in a certain scenario but in this case it will be much better to write the entire code in Python It would be better to use query selector and query selector all which will return an element and a list of elements respectively from playwright async api import async playwrightimport asyncio  async def main   async with async playwright  as pw     browser  await pw chromium launch     page  await browser new page     await page goto amp      all items  await page query selector all product pod     books       for item in all items       book         name el  await item query selector h       book name    await name el inner text       price el  await item query selector price color       book price    await price el inner text       stock el  await item query selector availability       book stock    await stock el inner text       books append book     print books     await browser close  if name   main   asyncio run main The output of both the Node js and the Python code will be the same You can click here to find the complete code used in this post for your convenience Playwright vs Puppeteer and SeleniumThere are other tools like Selenium and Puppeteer that can also do the same thing as Playwright However Puppeteer is limited when it comes to browsers and programming languages The only language that can be used is JavaScript and the only browser that works with it is Chromium Selenium on the other hand supports all major browsers and a lot of programming languages It is however slow and less developer friendly Also note that Playwright can intercept network requests For more details about network requests see this page The following table is a quick summary of the differences and similarities PLAYWRIGHTPUPPETEERSELENIUMSPEEDFastFastSlowerDOCUMENTATIONExcellentExcellentFairDEVELOPER EXPERIENCEBestGoodFairPROGRAMMING LANGUAGESJavaScript Python C JavaJavaScriptJava Python C RubyJavaScript KotlinBACKED BYMicrosoftGoogleCommunity and SponsorsCOMMUNITYSmall but activeLarge and activeLarge and activeBROWSER SUPPORTChromium Firefox and WebKitChromiumChrome Firefox IE Edge Opera Safari and moreComparison of performanceAs we mentioned in the previous section because of the vast difference in the programming languages and supported browsers it isn t easy to compare every scenario The only combination that can be compared is when scripts are written in JavaScript to automate Chromium This is the only combination that all three tools support A detailed comparison would be out of the scope of this post You can read more about the performance of Puppeteer Selenium and Playwright in this article The key takeaway is that Puppeteer is the fastest followed by Playwright Note that in some scenarios Playwright was faster Selenium is the slowest of the three Again remember that Playwright has other advantages such as multi browser support supporting multiple programming languages If you re looking for a fast cross browser web automation or don t know JavaScript Playwright will be your only choice ConclusionIn today s post we explored the capabilities of Playwright as a web testing tool that can be used for web scraping dynamic sites Due to its asynchronous nature and cross browser support it s a popular alternative to other tools We also covered code examples in both Node js and Python Playwright can help navigate to URLs enter text click buttons extract text etc Most importantly it can extract text that is rendered dynamically These things can also be done by other tools such as Puppeteer and Selenium but if you need to work with multiple browsers or have to work with language other than JavaScript Node js then Playwright would be a great choice If you re interested to read more about other similar topics check out our blog posts on web scraping with Selenium or Puppeteer tutorial And of course in case you have any questions or impressions about today s tutorial don t hesitate to leave a comment below	2022-11-03 07:48:55
海外TECH	DEV Community	tsParticles 2.5.1 Released	https://dev.to/tsparticles/tsparticles-251-released-e27	tsParticles Released tsParticles Changelog Bug FixesFixed issue with ES modules closes Social linksDiscordSlackTelegramReddit matteobruni tsparticles tsParticles Easily create highly customizable JavaScript particles effects confetti explosions and fireworks animations and use them as animated backgrounds for your website Ready to use components available for React js Vue js x and x Angular Svelte jQuery Preact Inferno Solid Riot and Web Components tsParticles TypeScript ParticlesA lightweight TypeScript library for creating particles Dependency free browser ready and compatible withReact js Vue js x and x Angular Svelte jQuery Preact Inferno Riot js Solid js and Web Components Table of Contents️️ This readme refers to vversion read here for v documentation ️️Use for your websiteLibrary installationOfficial components for some of the most used frameworksAngularInfernojQueryPreactReactJSRiotJSSolidJSSvelteVueJS xVueJS xWeb ComponentsWordPressElementorPresetsBig CirclesBubblesConfettiFireFireflyFireworksFountainLinksSea AnemoneSnowStarsTrianglesTemplates and ResourcesDemo GeneratorCharacters as particlesMouse hover connectionsPolygon maskAnimated starsNyan cat flying on scrolling starsBackground Mask particlesVideo TutorialsMigrating from Particles jsPlugins CustomizationsDependency GraphsSponsorsDo you want to use it on your website Documentation and Development references here This library is… View on GitHub	2022-11-03 07:43:31
ニュース	BBC News - Home	Flooding causes travel disruption across London	https://www.bbc.co.uk/news/uk-england-london-63496067?at_medium=RSS&at_campaign=KARANGA	heavy	2022-11-03 07:49:02
ニュース	BBC News - Home	Cold, hungry migrants left stranded in London	https://www.bbc.co.uk/news/uk-63489901?at_medium=RSS&at_campaign=KARANGA	hungry	2022-11-03 07:52:20
ニュース	BBC News - Home	Albanian PM Edi Rama in full: UK using migrants as scapegoats	https://www.bbc.co.uk/news/world-europe-63496336?at_medium=RSS&at_campaign=KARANGA	government	2022-11-03 07:44:26
北海道	北海道新聞	ロコ、世界選手権出場枠を獲得　カーリング女子	https://www.hokkaido-np.co.jp/article/755228/	世界選手権	2022-11-03 16:04:00
ビジネス	東洋経済オンライン	｢部下が育たない上司｣は人間の多様性を知らない ｢リーダーシップとはこうだ｣と決めつけてないか | ワークスタイル | 東洋経済オンライン	https://toyokeizai.net/articles/-/627929?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋経済オンライン	2022-11-03 16:30:00
ニュース	Newsweek	本当にただの父娘関係？ 24歳モデルと父親の写真、距離感が「気持ち悪い」と話題に	https://www.newsweekjapan.jp/stories/culture/2022/11/-24.php	【写真】父と娘にしては密着しすぎではSNSをざわつかせたハムリン父子の写真ネットでは「キモい」「刺激的」といった言葉が飛び交ったハムリンと長女デライラの密着写真だが、この写真を撮影したカメラマンがコメントし、まったく問題のない写真が拡大解釈されてしまったと説明した。	2022-11-03 16:40:00