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How do I get the return value from puppeteer?

When the following build runs, I get the error "Error: Evaluation failed: ReferenceError: chunk is not defined" as a console response. In the next line, I can reach chunk[a] as console.log, but why can't I reach it in frame.evaluate?

const puppeteer = require('puppeteer');
const chunk= ["google.com","facebook.com","gmail.com","stackoverflow.com"];

(async () => {
    for(var a=0;a<chunk.length;a++){
      const browser = await puppeteer.launch({headless:false})
      const page = await browser.newPage();
      const iframeHandle = await page.$("frame[name='main']");
      const frame = await iframeHandle.contentFrame();
      console.log(chunk[a]);
      await frame.evaluate(() => {
        if(document.querySelector("#content > table").innerHTML.indexOf(chunk[a]) > -1){
            console.log(chunk[a]);
        }
      });
    }
})()

result : google.com Evaluation failed: ReferenceError: chunk is not defined

about 4 years ago · Juan Pablo Isaza
1 Respuestas
Responde la pregunta

0

I moved the chunck inside the async and chunk is not defined disappeared. However, this time another error occured regarding the element you want to reach. I tried to correct this as well by adding .waitForSelector and removing page.$ but a third error occured which I believe is because of mispelled element path ("frame[name='main']"). You may change it and try it with the code below:

  (async () => {
    const chunk= ["google.com","facebook.com","gmail.com","stackoverflow.com"];
    for(var a=0;a<chunk.length;a++){
      const browser = await puppeteer.launch({headless:false})
      const page = await browser.newPage();
      const iframeHandle = await page.waitForSelector("frame[name='main']");
      const frame = await iframeHandle.contentFrame();
      console.log(chunk[a]);
      await frame.evaluate(() => {
        if(document.querySelector("#content > table").innerHTML.indexOf(chunk[a]) > -1){
            console.log(chunk[a]);
        }
      });
    }
  })()
about 4 years ago · Juan Pablo Isaza Denunciar
Responde la pregunta
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