up:如何等待元素可见? [英] puppeteer: how to wait until an element is visible?

问题描述

我想知道是否可以告诉puppeteer等到显示一个元素.

I would like to know if I can tell puppeteer to wait until an element is displayed.

const inputValidate = await page.$('input[value=validate]');
await inputValidate.click()
        
// I want to do something like that 
waitElemenentVisble('.btnNext ')

const btnNext = await page.$('.btnNext');
await btnNext.click();

有什么办法可以做到这一点?

Is there any way I can accomplish this?

推荐答案

我认为您可以为此目的使用page.waitForSelector(selector[, options])函数.

I think you can use page.waitForSelector(selector[, options]) function for that purpose.

const puppeteer = require('puppeteer');

puppeteer.launch().then(async browser => {
  const page = await browser.newPage();
  page
    .waitForSelector('#myId')
    .then(() => console.log('got it'));
    browser.close();
});

要检查可用选项，请参阅 github关联.

To check the options avaible, please see the github link.

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