How to Bypass captcha Using JavaScript

[CAPTCHAFORUM]

https://2captcha.com/blog/how-to-use-javascript-to-bypass-captcha

Captchas are designed to prevent automated bots from accessing websites, but sometimes they can be an inconvenience for legitimate users. If you're looking to automate web interactions using JavaScript, you might need a way to bypass captchas. One of the most effective solutions is using an external captcha-solving service like 2Captcha.

Understanding captchas in JavaScript​

Captchas are typically implemented using JavaScript to verify user interactions. They can range from simple image-based challenges to advanced reCAPTCHA v3, which tracks user behavior. Since captchas are meant to block automation, bypassing them requires external assistance.

Methods to Bypass captcha in JavaScript​

1. Using Pre-solved captchas​

One way to bypass captchas is by solving them externally and feeding the answer back to your script. Services like 2Captcha provide API-based solutions that return a solved response, which you can then submit automatically.

2. Automating Captcha Submission​

If the captcha challenge appears in a form, you can use JavaScript to detect and submit the response programmatically. Here’s a simple example:

// Example of using 2Captcha to bypass a captcha in JavaScript
async function solveCaptcha(apiKey, siteKey, url) {
const response = await fetch(`http://2captcha.com/in.php?key=${apiKey}&method=userrecaptcha&googlekey=${siteKey}&pageurl=${url}&json=1`);
const data = await response.json();

if (data.status === 1) {
let captchaId = data.request;
await new Promise(resolve => setTimeout(resolve, 15000)); // Wait for solving

const result = await fetch(`http://2captcha.com/res.php?key=${apiKey}&action=get&id=${captchaId}&json=1`);
const resultData = await result.json();

return resultData.request; // This is the solved captcha token
}
return null;
}

3. Integrating the Solved Response​

Once you receive the solved captcha token, you need to insert it into the required form field and submit the form programmatically:

async function fillAndSubmitCaptcha() {
    const solvedToken = await solveCaptcha('YOUR_API_KEY', 'SITE_KEY', window.location.href);

if (solvedToken) {
document.querySelector('[name="g-recaptcha-response"]').value = solvedToken;
document.querySelector('form').submit();
}
}
fillAndSubmitCaptcha();

Why Use 2Captcha?​

• High Success Rate: Works with various captcha types, including reCAPTCHA, hCaptcha, and text-based captchas.
• Fast Processing: Quick solving times ensure minimal delays.
• Easy API Integration: Simple HTTP requests make it accessible for JavaScript-based automation.
• Affordable Pricing: Cost-effective for bulk automation needs.

Bypassing captchas in JavaScript requires the use of external solving services as captchas are specifically designed to prevent automation. If you’re automating tasks that frequently encounter captchas, integrating 2Captcha into your script is the most reliable and efficient solution.