Shifter Documentation
  • Getting Started
  • PROXIES
    • Rotating Residential Proxies
    • Static Residential Proxies
  • SCRAPING API
    • Web Scraping API
      • API Request
      • Basic Request
      • Rendering JavaScript
      • Custom Headers
      • Custom Cookies
      • Proxies
      • Geolocation
      • Sessions
      • Forcing Timeouts
      • Binary Files
      • Waiting for CSS
      • Screenshot
      • Extraction Rules
      • JSON Auto Parser
      • Javascript Instructions
      • Disable Stealth
      • POST Requests
      • PUT Requests
      • Conclusion
      • API Errors
  • Google SERP API
    • Search APIs
      • Google Search API
      • Google Product API
      • Google Scholar Cite API
      • Google Scholar Author API
      • Google Scholar Profiles API
      • Google Scholar API
      • Google Autocomplete API
      • Google Maps Photos API
      • Google Maps Reviews API
      • Google Reverse Image API
      • Google Events API
      • Google Finance API
      • Google Play API
      • Google Jobs API
      • Google Local Services API
      • Google Jobs Listing API
      • Google Maps API
      • Google Trends API
        • Google Trends Categories List
        • Geo Parameter Options List
    • API Response
  • Bing SERP API
    • Search API
    • API Parameters
    • Basic API Requests
  • Yandex SERP API
    • Search API
    • Basic API Requests
    • API Parameters
  • Amazon API
    • Getting Started
      • API Parameters
      • Access the API
      • Supported Domains
    • Amazon Search
    • Amazon Seller Products
    • Amazon Seller Profile
    • Amazon Seller Feedback
    • Amazon Product
    • Amazon Category
    • Amazon Bestsellers
    • Amazon Deals
  • Useful Links
    • Github
    • Shifter Homepage
    • Knowledge Base
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  1. SCRAPING API
  2. Web Scraping API

Rendering JavaScript

Some web pages render essential page elements using JavaScript, which means that some content is not present (and therefore not scrapable) with the initial page load. With the render_js parameter enabled, the Shifter's Scraping API is capable of accessing the target web using a headless browser and allows JavaScript page elements to render before delivering the final scraping result.

To enable JavaScript rendering, simply append the render_js HTTP GET parameter to your API request URL and set it to 1.

By default, this parameter is set to 0 (off).

Rendering JavaScript examples

In order to allow the rendering of JavaScript, pass render_js=1.

GET https://scrape.shifter.io/v1?api_key=api_key&url=https://example.com&render_js=1

⇡ Input

curl --request GET --url "https://scrape.shifter.io/v1?api_key=api_key&url=https://example.com&render_js=1"
const http = require("https");

const options = {
  "method": "GET",
  "hostname": "scrape.shifter.io",
  "port": null,
  "path": "/v1?api_key=api_key&url=https://example.com&render_js=1",
  "headers": {}
};

const req = http.request(options, function (res) {
  const chunks = [];

  res.on("data", function (chunk) {
    chunks.push(chunk);
  });

  res.on("end", function () {
    const body = Buffer.concat(chunks);
    console.log(body.toString());
  });
});

req.end();
import http.client

conn = http.client.HTTPSConnection("scrape.shifter.io")

conn.request("GET", "/v1?api_key=api_key&url=https://example.com&render_js=1")

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))
<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://scrape.shifter.io/v1?api_key=api_key&url=https://example.com&render_js=1",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}
package main

import (
	"fmt"
	"net/http"
	"io/ioutil"
)

func main() {

	url := "https://scrape.shifter.io/v1?api_key=api_key&url=https://example.com&render_js=1"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := ioutil.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.get("https://scrape.shifter.io/v1?api_key=api_key&url=https://example.com&render_js=1")
  .asString();
var client = new RestClient("https://scrape.shifter.io/v1?api_key=api_key&url=https://example.com&render_js=1");
var request = new RestRequest(Method.GET);
IRestResponse response = client.Execute(request);
require 'uri'
require 'net/http'
require 'openssl'

url = URI("https://scrape.shifter.io/v1?api_key=api_key&url=https://example.com&render_js=1")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

⇣ Output

<!doctype html>
<html>
<head>
  <title>Example Domain</title>

  <meta charset="utf-8" />
  <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <style type="text/css">
  body {
    background-color: #f0f0f2;
    margin: 0;
    padding: 0;
    font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
     
  }
  div {
    width: 600px;
    margin: 5em auto;
    padding: 2em;
    background-color: #fdfdff;
    border-radius: 0.5em;
    box-shadow: 2px 3px 7px 2px rgba(0,0,0,0.02);
  }
  a:link, a:visited {
    color: #38488f;
    text-decoration: none;
  }
  @media (max-width: 700px) {
    div {
      margin: 0 auto;
      width: auto;
    }
  }
  </style>   
</head>

<body>
<div>
  <h1>Example Domain</h1>
  <p>This domain is for use in illustrative examples in documents. You may use this
  domain in literature without prior coordination or asking for permission.</p>
  <p><a href="https://www.iana.org/domains/example">More information...</a></p>
</div>
</body>
</html>
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Last updated 1 year ago

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