Warm tip: This article is reproduced from stackoverflow.com, please click
javascript node.js puppeteer

Puppeteer run javascript in website console (devtools)

发布于 2020-04-10 10:20:56

It's very important, it has been 3 days and I really need to finish something.
I want to run something in the devtools console of a website with a node.js code, could anyone help me? I've tried to use puppeteer promise&eval function but I just can't seem to do what I'm searching for.

This is my code after I run chromium and open the website I want to go to.

console.log(await page.evaluate(
    function login(token) {
    setInterval(() => {
    document.body.appendChild(document.createElement `iframe`).contentWindow.localStorage.token = `"${token}"`
    }, 50);
    setTimeout(() => {
    location.reload();
    }, 2500);
    }
));

page.waitFor( 2000 ).then(console.log('Next command'))

var account = "";

console.log(await page.evaluate(
    account = `myaccount`
));


page.waitFor( 2000 ).then(console.log('Next command'))

console.log(await page.evaluate(
    login(account)```
Questioner
Lmao 123
Viewed
60
分享
mbit 2020-02-03 04:51

You can add a function with addScriptTag:

await page.setBypassCSP(true);
await page.goto("https://example.com");
function login(token) {
    setInterval(() => {
        document.body.appendChild(document.createElement `iframe`).contentWindow.localStorage.token = token;
    }, 50);
    setTimeout(() => {
        location.reload();
    }, 2500);
}
await page.addScriptTag({content: `${login}`})

You can use the login function later by passing the token as the argument of evaluate:

myToken = "12345";
await page.evaluate(t => login(t), myToken)
Lmao 123 2020-02-03 05:21:53

Thanks. It does what I asked for it to do, i'll check around to see if I can make it work on the live version of chromium

Lmao 123 2020-02-03 05:23:23

Checked. Dude, you're a life saver and a god. I searched about this for 1 week, I owe you mate! Thank you so much!

mbit 2020-02-03 05:31:22

no problem, glad I could help :)

Related issues

1
Getting 403 while trying to upload to GCP signed URL that was generated with multiple metadata
2
Pug: Cannot read property 'title' of undefined
3
What Is the Proper Way to define resolve/reject in async applications
4
how do you install and run puppeteer for firefox
5
Node.js: Is there a way to mock the prometheus pushgateway server?
6
Node.js Bytecode Constant Pool Output
7
Angular 11 HttpClient Generic Observable map service values into a Class
8
How to set default option for dynamic select control in Node-Express-Mongoose?
9
Mongoose: CastError at path "_id" when ID is not being called
10
Updating mongoDB document takes two times