我有一個工作代碼，它成功地從多個頁面中獲取所有產品鏈接，這些頁面至少有 20% 的折扣。唯一的問題是它分別返回每個頁面的數組中的鏈接。但是，我希望它返回單個數組中所有頁面的鏈接，然後將它們傳輸到另一個函數。我嘗試創建一個字符串 var all_links = [] 並將每個頁面中的所有鏈接推送到其中，然後像 return all_links 一樣返回它們，正如我從一個更簡單的示例中了解到的那樣。但是，我在這種情況下沒有成功，因為我沒有編碼經驗。三週前我開始學習基礎知識。如果您能幫助我完成整個代碼，我將不勝感激，因為我沒有必要的先驗知識。
const puppeteer = require('puppeteer')
const minDiscount = 20;
async function getLinks() {
const browser = await puppeteer.launch({
headless: false,
defaultViewport: null,
});
const page = await browser.newPage();
const url = 'https://www.mytoys.de/spielzeug-spiele/holz/';
await page.goto(url);
// getting all the products, this will return an array of ElementHandle
while(await page.$(".pager__link--next")){
await page.waitForSelector(".pager__link--next")
await page.waitForTimeout(1000);
await page.click('.pager__link--next')
await page.waitForTimeout(1500);
const products = await page.$$('.prod-grid.js-prod-grid .prod-grid__item.js-prod-grid_item');
const proms = await Promise.allSettled(
products.map(async (prod) => {
// searching for a discount on each product
const disc = await prod.$$eval(
'.prod-grid.js-prod-grid .prod-flag.prod-flag-sale',
(discount) =>
discount.map((discItem) =>
discItem.innerText.replace(/[^0-9.]/g, '').replace(/\D+/g,'0')
)
);
// if it has a discount
if (disc.length > 0) {
// we parse the discount to Integer type to compare it to minDiscount
const discountInt = parseInt(disc[0], 10);
if (discountInt >= minDiscount) {
// we get the link of the product
const link = await prod.$$eval('.prod-grid.js-prod-grid .prod-tile__link.js-prodlink', (allAs) => allAs.map((a) => a.href));
if (link.length > 0) {
// push an object containing the discount and the link of the product
return link[0];
}
}
}
return null;
})
);
const bulkArray = proms.map((item) => {
if (item.status === 'fulfilled') return item.value;
});
const endArray = bulkArray.filter(item => item !== null);
console.log(endArray);
}
}
getLinks();
我目前獲得的結果示例
[
'https://www.mytoys.de/erzi-kinderwurst-sortiment-spiellebensmittel-6749036.html',
'https://www.mytoys.de/chr-tanner-spiellebensmittel-wurststaender-1031946.html',
'https://www.mytoys.de/hape-xylophon-und-hammerspiel-2503719.html',
'https://www.mytoys.de/erzi-kinderparty-spiellebensmittel-6749035.html',
]
[
'https://www.mytoys.de/brio-holzeisenbahnset-landleben-5501952.html',
'https://www.mytoys.de/brio-brio-33277-bahn-ir-reisezug-set-4592516.html',
'https://www.mytoys.de/brio-parkhaus-strassen-schienen-3175226.html',
'https://www.mytoys.de/mytoys-steckwuerfel-12-tlg-11389814.html',
'https://www.mytoys.de/brio-schienen-und-weichensortiment-1758325.html',
]
[
'https://www.mytoys.de/hape-grosser-baukran-4141517.html',
'https://www.mytoys.de/noris-mein-buntes-tuermchenspiel-3421170.html',
'https://www.mytoys.de/goki-ziehtier-schaf-suse-2488933.html',
'https://www.mytoys.de/eichhorn-colorsoundzug-mit-licht-1521635.html',
]
您想要獲得的結果示例
[
'https://www.mytoys.de/erzi-kinderwurst-sortiment-spiellebensmittel-6749036.html',
'https://www.mytoys.de/chr-tanner-spiellebensmittel-wurststaender-1031946.html',
'https://www.mytoys.de/hape-xylophon-und-hammerspiel-2503719.html',
'https://www.mytoys.de/erzi-kinderparty-spiellebensmittel-6749035.html',
'https://www.mytoys.de/brio-holzeisenbahnset-landleben-5501952.html',
'https://www.mytoys.de/brio-brio-33277-bahn-ir-reisezug-set-4592516.html',
'https://www.mytoys.de/brio-parkhaus-strassen-schienen-3175226.html',
'https://www.mytoys.de/mytoys-steckwuerfel-12-tlg-11389814.html',
'https://www.mytoys.de/brio-schienen-und-weichensortiment-1758325.html',
'https://www.mytoys.de/hape-grosser-baukran-4141517.html',
'https://www.mytoys.de/noris-mein-buntes-tuermchenspiel-3421170.html',
'https://www.mytoys.de/goki-ziehtier-schaf-suse-2488933.html',
'https://www.mytoys.de/eichhorn-colorsoundzug-mit-licht-1521635.html',
]
const allLinks = []; // <--
while(await page.$(".pager__link--next")){ ... }
...
const endArray = bulkArray.filter(item => item !== null);
console.log(endArray);
allLinks.push(endArray); // <--
async function getLinks() {
...
return allLinks.flat(); // <--
}
console.log(await getLinks()) // result array
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