Rendering Javascript

Learn to scrape JavaScript-rendered pages using ScraperAPI in NodeJS. Enable headless browser rendering with render=true for dynamic content, SPAs, and JS-heavy sites.

If you are crawling a page that requires you to render the Javascript on the page to scrape the data you need, then we can fetch these pages using a headless browser.

To render Javascript, simply set render=true and we will use a headless Google Chrome instance to fetch the page. This feature is available on all plans.

Pass the JavaScript rendering parameter within the URL:

• API REQUEST

import fetch from 'node-fetch';

fetch('https://api.scraperapi.com/?api_key=APIKEY&url=http://httpbin.org/ip&render=true')
.then(response => {
console.log(response)
})
.catch(error => {
console.log(error)
})

• PROXY MODE

const axios = require('axios');
axios.get('https://httpbin.org/ip', {
  method: 'GET',
  proxy: {
    host: 'proxy-server.scraperapi.com',
    port: 8001,
    auth: {
      user: 'scraperapi.render=true',
      password: 'APIKEY'  
    },
    protocol: 'http'
  }
})
  .then(response => {
    console.log(response)
  })
  .catch(error => {
    console.log(error)
  });

• SDK Method

const request = require('request-promise');

options = {
  method: 'GET',
  url: 'http://httpbin.org/ip',
  proxy: 'http//scraperapi.render=true:[email protected]:8001'
}
request(options)
  .then(response => {
      console.log(response)
  })
  .catch(error => {
      console.log(error)
  })

Pass the parameter in the headers:

• API REQUEST

import fetch from 'node-fetch';

const headers = {
  'Content-Type': 'application/json',
  'x-sapi-api_key': '<YOUR_API_KEY>',
  'x-sapi-render': 'true'
};

fetch('https://api.scraperapi.com?url=http://httpbin.org/ip', {
  method: 'GET',
  headers: headers
})
.then(response => {
        console.log(response);
    })
    .catch(error => {
        console.error('Error fetching data:', error);
    });

• PROXY MODE

const axios = require('axios');
const headers = {
  'x-sapi-render': 'true'
};
axios.get('http://httpbin.org/ip', {
  method: 'GET',
  headers: headers,
  proxy: {
    host: 'proxy-server.scraperapi.com',
    port: 8001,
    auth: {
      user: 'scraperapi',
      password: '<YOUR_API_KEY>'  
    },
    protocol: 'http'
  }
})
  .then(response => {
    console.log(response)
  })
  .catch(error => {
    console.log(error)
  });

• SDK Method

const request = require('request-promise');
const headers = {
  'x-sapi-render': 'true'
};
options = {
  method: 'GET',
  headers: headers,
  url: 'http://httpbin.org/ip',
  proxy: 'http://scraperapi:<YOUR_API_KEY>@proxy-server.scraperapi.com:8001'
}
request(options)
  .then(response => {
      console.log(response)
  })
  .catch(error => {
      console.log(error)
  })