Puppeteer - variable not getting passed in the evaluate function

Question

I have a function where i am trying to get all the text on the child elements from the parent node.

getTextsForChildElements: async function (selector) {
    const data = await page.evaluate(() => {
        const tds = Array.from(document.querySelectorAll(selector))
        return tds.map(td => td.textContent)
    },selector);
    console.log(data);
},

However, I am seeing selector is not definederror.

Tried using this question as help, but didn't resolve. any idea, how i can pass the selector.

score 1 · Accepted Answer · answered Nov 13 '19 at 04:08

The anonymous function which is the first argument to the page.evaluate should accept the arguments which you are passing. Right not, it it not taking any arguments. Modify it as below:

getTextsForChildElements: async function (selector) {
    const data = await page.evaluate((selector) => {
        const tds = Array.from(document.querySelectorAll(selector))
        return tds.map(td => td.textContent)
    },selector);
    console.log(data);
},

thanks @yeniv.. this helped and i was able to get it work – Saurabh Nov 13 '19 at 05:56 — Saurabh, Nov 13 '19 at 05:56

Puppeteer - variable not getting passed in the evaluate function

1 Answers1