javascript - 如何从Google表单弹出式下拉菜单中选择选项Puppeteer Node JS

大家，我最近一直在尝试实现Google表单的自动化功能，但对此下拉菜单感到很困惑。

我只是无法从弹出下拉菜单中选择所需的值。由于下拉列表自动完成，如果我使用puppeteer在字段中写ie。联合王国，当使用空格字符时，它会自动将表格自动填写为阿拉伯联合酋长国（联合王国之后的第一个值），并输入到表格中并选择第一个值。

我做了一个虚拟的Google表单来模拟我的情况：
https://docs.google.com/forms/d/e/1FAIpQLSeY-5GpBQ7ww3qm-EUn5ENTl-KOVD02PIwlyblw8ItjfOfhtQ/viewform?usp=sf_link

谢谢大家！

最佳答案

我尝试，这就是我编写的代码。

笔记：

我不是用通常的鼠标方法通过单击和选择元素来编写此代码的，因为在出​​错时很难调试。

您必须声明下拉列表的根选择器，如果有多个下拉列表，则必须自己找到合适的选择器。

并且不要忘记在此代码中选择desiredOption。

const puppeteer = require ('puppeteer')

const formURL = 'https://docs.google.com/forms/d/e/1FAIpQLSeY-5GpBQ7ww3qm-EUn5ENTl-KOVD02PIwlyblw8ItjfOfhtQ/viewform'

const dropDownRootElemSelector = 'div.quantumWizMenuPaperselectEl'

const desiredOption = 'United Kingdom' // Write down your desired option here

;(async () => {

    const browser = await puppeteer.launch ({
        headless: false,
        devtools: false
    })

    const [page] = await browser.pages ()

    const open = await page.goto ( formURL, { waitUntil: 'networkidle0', timeout: 0 } )

    while ( await page.evaluate ( dropDownRootElemSelector => !document.querySelector(dropDownRootElemSelector).classList.contains('isFocused'), dropDownRootElemSelector ) ) {
        await page.keyboard.press('Tab')
        await page.waitFor(250)
    }

    await page.keyboard.press('Space')

    while ( await page.evaluate ( dropDownRootElemSelector => document.querySelector(dropDownRootElemSelector).lastElementChild.childElementCount === 0, dropDownRootElemSelector ) ) {
        await page.waitFor(200)
    }

    const optionExist = async () => {
        await page.evaluate ( (dropDownRootElemSelector, desiredOption) => {

            var optionsDropDown = []

            document.querySelectorAll( dropDownRootElemSelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"]').forEach(elem => optionsDropDown.push(elem.textContent) )

            return ( optionsDropDown.includes(desiredOption) )

        }, dropDownRootElemSelector, desiredOption)
    }

    if ( optionExist () ) {
        await page.keyboard.press('ArrowDown')
    }

    while ( await page.evaluate ( (dropDownRootElemSelector) => document.querySelector( dropDownRootElemSelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected') === null, dropDownRootElemSelector ) ) {
        await page.waitFor(250)
    }

    while ( optionExist () && await page.evaluate ( (dropDownRootElemSelector, desiredOption) => document.querySelector( dropDownRootElemSelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected').dataset.value !== desiredOption, dropDownRootElemSelector, desiredOption) ) {
        // console.log ( await page.evaluate ( (dropDownRootElemSelector) => document.querySelector( dropDownRootElemSelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected').dataset.value, dropDownRootElemSelector ) )
        await page.keyboard.press('ArrowDown')
        await page.waitFor(250)
    }

    await page.keyboard.press('Enter')


})()

如果您有多个下拉菜单，那么这很简单。

您可以在选择器上添加唯一标识符，对于本示例，可以为每个下拉列表添加[data-item-id="ID_NUMBER"]。

不要忘记通过在每个下拉代码的末尾放置await page.waitFor(1000)来增加延迟，以避免由于快速运行的脚本而导致未选择的下拉菜单。

为多个下拉菜单添加了新的答案：

const puppeteer = require ('puppeteer')

const formURL = 'https://docs.google.com/forms/d/e/1FAIpQLSeY-5GpBQ7ww3qm-EUn5ENTl-KOVD02PIwlyblw8ItjfOfhtQ/viewform'

const dropDownRootCountrySelector = '[data-item-id="1058991397"] > div.quantumWizMenuPaperselectEl'
const dropDownRootZoneSelector = '[data-item-id="50474009"] > div.quantumWizMenuPaperselectEl'

const desiredCountry = 'United Kingdom' // Write down your desired option here
const desiredZone = 'Europe' // Write down your desired option here

;(async () => {

    const browser = await puppeteer.launch ({
        headless: false,
        devtools: false
    })

    const [page] = await browser.pages ()

    const open = await page.goto ( formURL, { waitUntil: 'networkidle0', timeout: 0 } )

    // FIRST DROPDOWN => COUNTRY

    while ( await page.evaluate ( dropDownRootCountrySelector => !document.querySelector(dropDownRootCountrySelector).classList.contains('isFocused'), dropDownRootCountrySelector ) ) {
        await page.keyboard.press('Tab')
        await page.waitFor(250)
    }

    await page.keyboard.press('Space')

    while ( await page.evaluate ( dropDownRootCountrySelector => document.querySelector(dropDownRootCountrySelector).lastElementChild.childElementCount === 0, dropDownRootCountrySelector ) ) {
        await page.waitFor(200)
    }

    const optionExistCountry = async () => {
        await page.evaluate ( (dropDownRootCountrySelector, desiredCountry) => {

            var optionsDropDown = []

            document.querySelectorAll( dropDownRootCountrySelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"]').forEach(elem => optionsDropDown.push(elem.textContent) )

            return ( optionsDropDown.includes(desiredCountry) )

        }, dropDownRootCountrySelector, desiredCountry)
    }

    if ( optionExistCountry () ) {
        await page.keyboard.press('ArrowDown')
    }

    while ( await page.evaluate ( (dropDownRootCountrySelector) => document.querySelector( dropDownRootCountrySelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected') === null, dropDownRootCountrySelector ) ) {
        await page.waitFor(250)
    }

    while ( optionExistCountry () && await page.evaluate ( (dropDownRootCountrySelector, desiredCountry) => document.querySelector( dropDownRootCountrySelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected').dataset.value !== desiredCountry, dropDownRootCountrySelector, desiredCountry) ) {
        // console.log ( await page.evaluate ( (dropDownRootCountrySelector) => document.querySelector( dropDownRootCountrySelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected').dataset.value, dropDownRootCountrySelector ) )
        await page.keyboard.press('ArrowDown')
        await page.waitFor(250)
    }

    await page.keyboard.press('Enter')

    await page.waitFor(1000)
    // SECOND DROPDOWN => ZONE

    while ( await page.evaluate ( dropDownRootZoneSelector => !document.querySelector(dropDownRootZoneSelector).classList.contains('isFocused'), dropDownRootZoneSelector ) ) {
        await page.keyboard.press('Tab')
        await page.waitFor(250)
    }

    await page.keyboard.press('Space')

    while ( await page.evaluate ( dropDownRootZoneSelector => document.querySelector(dropDownRootZoneSelector).lastElementChild.childElementCount === 0, dropDownRootZoneSelector ) ) {
        await page.waitFor(200)
    }

    const optionExistZone = async () => {
        await page.evaluate ( (dropDownRootZoneSelector, desiredZone) => {

            var optionsDropDown = []

            document.querySelectorAll( dropDownRootZoneSelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"]').forEach(elem => optionsDropDown.push(elem.textContent) )

            return ( optionsDropDown.includes(desiredZone) )

        }, dropDownRootZoneSelector, desiredZone)
    }

    if ( optionExistZone () ) {
        await page.keyboard.press('ArrowDown')
    }

    while ( await page.evaluate ( (dropDownRootZoneSelector) => document.querySelector( dropDownRootZoneSelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected') === null, dropDownRootZoneSelector ) ) {
        await page.waitFor(250)
    }

    while ( optionExistZone () && await page.evaluate ( (dropDownRootZoneSelector, desiredZone) => document.querySelector( dropDownRootZoneSelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected').dataset.value !== desiredZone, dropDownRootZoneSelector, desiredZone) ) {
        // console.log ( await page.evaluate ( (dropDownRootZoneSelector) => document.querySelector( dropDownRootZoneSelector + ' > div[role="presentation"] ~ div[role="presentation"] > div[role="option"] ~ div[role="presentation"] ~ div[role="option"].isSelected').dataset.value, dropDownRootZoneSelector ) )
        await page.keyboard.press('ArrowDown')
        await page.waitFor(250)
    }

    await page.keyboard.press('Enter')

})()