在puppeteer中,要实现在给定列值的特定行上悬停的功能,可以按照以下步骤进行迭代表:
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch();
const page = await browser.newPage();
// 进行后续操作
})();
await page.goto('目标页面URL');
const rows = await page.$$eval('table tr', rows => rows.length);
const columns = await page.$$eval('table tr:first-child td', columns => columns.length);
let targetRow;
for (let i = 1; i <= rows; i++) {
const value = await page.$eval(`table tr:nth-child(${i}) td:nth-child(列索引)`, cell => cell.textContent);
if (value === '目标值') {
targetRow = i;
break;
}
}
其中,列索引
是目标列的索引,从1开始计数。
await page.hover(`table tr:nth-child(${targetRow})`);
完整的代码示例:
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.goto('目标页面URL');
const rows = await page.$$eval('table tr', rows => rows.length);
const columns = await page.$$eval('table tr:first-child td', columns => columns.length);
let targetRow;
for (let i = 1; i <= rows; i++) {
const value = await page.$eval(`table tr:nth-child(${i}) td:nth-child(列索引)`, cell => cell.textContent);
if (value === '目标值') {
targetRow = i;
break;
}
}
await page.hover(`table tr:nth-child(${targetRow})`);
await browser.close();
})();
在这个例子中,我们使用了puppeteer库来模拟浏览器操作,通过迭代表格的每一行,找到目标行,并在该行上执行悬停操作。请根据实际情况替换目标页面URL
、列索引
和目标值
。
领取专属 10元无门槛券
手把手带您无忧上云