Shiga Facebook ta hanyar shirye-shirye na iya tabbatar da zama ƙalubale, amma yana da kyau a magance shi. A matsayinka na mai haɓakawa, sau da yawa kana fuskantar neman hanyoyin magance matsaloli masu rikitarwa kuma wannan ba shi da bambanci. Tare da taimakon JavaScript, da ƴan ɗakunan karatu masu fa'ida, wannan labarin zai bi ta hanyar cimma wannan. Lambobin da mafita da aka bayar a nan za su jagorance ku mataki-mataki, yana lalata ɗawainiya mai rikitarwa na shiga Facebook.
Fahimtar Matsala
Shiga ta atomatik, yayin da madaidaiciyar gaba ga wasu ayyuka, na iya zama mai sarƙaƙiya lokacin da muke hulɗa da dandamali kamar Facebook. Babban dalilin shine yadda Facebook ke sarrafa bayanan zaman da kuma tsauraran matakansa na hana bots ko rubutun shiga, don kare sirrin mai amfani da bayanan. Duk da yake ba mu yarda ko haɓaka ayyukan da ke mamaye sirri ko amfani da bayanai ba, koyo game da wannan tsari na iya zama babbar hanya don fahimtar yadda JavaScript da ɗakunan karatu ke aiki, musamman dangane da APIs da sarrafa kansa na yanar gizo.
Bayanin Magani ta amfani da JavaScript
Don sarrafa tsarin shiga Facebook, kuna buƙatar yin amfani da mashigin mara kai kamar Yar tsana. Puppeteer ɗakin karatu ne na Node wanda ƙungiyar Chrome ta haɓaka wanda ke ba da babban matakin API don sarrafa Chrome ko Chromium akan ka'idar DevTools. Haɗe da Node.js, wannan yana ba mu kayan aiki mai ƙarfi don sarrafa gidan yanar gizo.
const puppeteer = require('puppeteer');
async function startBrowser(){
const browser = await puppeteer.launch({
headless: false,
args: ['--start-maximized']
});
const page = await browser.newPage();
await page.setViewport({ width: 1366, height: 768});
return {browser, page};
}
Bayanin mataki-mataki na Code
Wannan saitin yana ƙaddamar da sabon misali mai bincike, yana buɗe sabon shafi, kuma ya saita tashar kallon don dacewa da daidaitaccen ra'ayi na tebur don tabbatar da cewa ana iya isa ga duk abubuwan shafi yadda ya kamata (ƙananan batutuwa idan aka kwatanta da wurin kallon wayar hannu).
Ci gaba, mataki na gaba zai kasance don jagorantar ɗan wasan tsana zuwa shafin shiga Facebook da shigar da bayanan tantancewa.
const {browser, page} = await startBrowser();
await page.goto('https://www.facebook.com/login');
await page.type('[id="email"]', 'yourEmail');
await page.type('[id="pass"]', 'yourPassword');
await page.click('[id="loginbutton"]');
Wannan katanga na lambar ya sa Puppeteer ya buɗe shafin shiga Facebook, rubuta imel da kalmar wucewa da kuka bayar, sannan a ƙarshe danna maɓallin shiga'.
Waɗannan misalai kaɗan ne na yuwuwar amfani ga Puppeteer da ɗakunan karatu masu alaƙa. Fitar da hadaddun ayyuka irin wannan zuwa cikin ɓangarorin da za a iya sarrafawa na iya sauƙaƙa abubuwa. A matsayin masu haɓakawa, yana da mahimmanci don haɓaka kayan aikin mu kuma mu ci gaba da samun ci gaba a cikin ƙwarewar coding ɗin mu.
Facebook API da Aikace-aikace
Wata hanyar yin mu'amala da bayanan Facebook ita ce ta hanyar amfani da API na Facebook, ko Faceaddamar da Tsarin Farfajiyar aikace-aikacen kwamfuta Wannan fasaha tana ba masu shirye-shirye damar yin hulɗa tare da dandamali cikin sauƙi da aminci. Ta hanyar ƙirƙira aikace-aikace akan dandalin mai haɓakawa na Facebook, kuna samun dama ga maɓallai na musamman da alamun da ke ba da izinin gano aikace-aikacenku da ba da izini don bayanai daban-daban.
Dakunan karatu masu amfani don Shirye-shiryen JavaScript
Laburaren JavaScript daban-daban suna ba masu haɓaka hanyoyin da suka dace don magance koma baya. Dakunan karatu kamar axios don buƙatun HTTP na tushen alkawari, Express don gina aikace-aikacen yanar gizo, ko Mongoose don MongoDB kayan tallan kayan kawa, misalai ne kaɗan. Kowannensu yana da maƙasudinsa na musamman da amfani a cikin faɗuwar duniyar JavaScript.
Kamar yadda kowane aiki da ɗawainiya suka bambanta, yana da mahimmanci a fahimci abin da kowane ɗakin karatu ke bayarwa da kuma yadda zai dace da bukatun aikinku ko kuna aiki tare da Node.js akan ƙarshen baya ko React.js a gaba-gaba. Yin amfani da kayan aikin da suka dace na iya ba ku ƙwarewar yin rikodin ƙididdigewa tare da ingantaccen aiki mai inganci.
Ayyukan JavaScript
Ayyuka a cikin JavaScript su ne ɓangarorin harshe. Sun bar mu mu raba tare da sake amfani da tubalan lambobin yadda ya kamata, suna ba mu damar kiyaye lambar DRY (Kada ku Maimaita Kanku). Ana iya bayyana ayyuka da amfani da su ta hanyoyi daban-daban, kamar amfani da kalmar 'aiki', kalmar 'aikin kibiya', ko 'Maigin aikin'. Ayyukan gwaninta suna ba masu haɓaka damar yin rubutu mai tsabta, ingantaccen lamba wanda ya fi sauƙi don gyarawa da kiyayewa.
A ƙarshe, yayin da sarrafa kansa ta hanyar shiga Facebook na iya zama kamar aiki mara nauyi, ilimin da aka samu daga tsarin yana da mahimmanci. Yana ƙarfafa ku da fahimtar yadda ake amfani da masu bincike marasa kai, sarrafa shafuka da tsari, da aiki tare da APIs a cikin amintacciyar hanya, mutuntawa. Hakanan mahimmanci shine haɓakar da aka samu daga bincike da fahimtar nau'ikan kayan aiki mai ƙarfi wanda shine JavaScript.
