# 无头浏览器（JavaScript-Unterstützung）

当您需要抓取的内容是通过 JavaScript 生成时使用 JavaScript 令牌，因为它是 JavaScript 构建的页面（React、Angular等）,或者因为内容是在浏览器上动态生成的.

# Was ist der Unterschied zwischen den beiden?

当您使用 JavaScript-Software Crawling API使用 JS令牌可让您受益于更多功能, 例如捕获图像的屏幕截图和绕过仅在启用浏览器的爬虫上运行的网站阻止.检查 参数 部分包含您可以使用的功能列表, 这些功能仅在 JS 爬行时可用.

# JavaScript-API-Konfiguration

Weitere Artikel Crawling API JavaScript-Code: 20 Seiten (ca. 1.728 Mbit/s). 联系支持 (打开新窗口) (öffnet neues Fenster) Dies ist ein Beispiel aus der Praxis.

# JavaScript-Sprachbeispiele

curl "https://api.crawlbase.com/?token=_JS_TOKEN_&url=https://www.missguidedau.com/petite-black-msgd-insert-mesh-cut-out-gym-leggings-10202499"

require 'net/http'

uri = URI('https://api.crawlbase.com')
uri.query = URI.encode_www_form({
  token: '_JS_TOKEN_',
  url: 'https://www.missguidedau.com/petite-black-msgd-insert-mesh-cut-out-gym-leggings-10202499'})

res = Net::HTTP.get_response(uri)
puts "Response HTTP Status Code: \#{res.code}"
puts "Response HTTP Header Original Status: \#{res['original_status']}"
puts "Response HTTP Response Body: \#{res.body}"

const https = require('https');

const url = encodeURIComponent('https://www.missguidedau.com/petite-black-msgd-insert-mesh-cut-out-gym-leggings-10202499');
const options = {
  hostname: 'api.crawlbase.com',
  path: '/?token=_JS_TOKEN_&url=' + url
};

https.request(options, (response) => {
  let body = '';
  response.on('data', chunk => body += chunk).on('end', () => console.log(body));
}).end();

$url = urlencode('https://www.missguidedau.com/petite-black-msgd-insert-mesh-cut-out-gym-leggings-10202499');

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.crawlbase.com/?token=_JS_TOKEN_&url=' . $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);
curl_close($ch);

var_dump($response);

from urllib2 import urlopen
from urllib import quote_plus

url = quote_plus('https://www.missguidedau.com/petite-black-msgd-insert-mesh-cut-out-gym-leggings-10202499')

handler = urlopen('https://api.crawlbase.com/?token=_JS_TOKEN_&url=' + url)

print handler.read()

package main

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

func main() {
  url := url.QueryEscape("https://www.missguidedau.com/petite-black-msgd-insert-mesh-cut-out-gym-leggings-10202499")
  resp, _ := http.Get("https://api.crawlbase.com/?token=_JS_TOKEN_&url=" + url)

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

  fmt.Println("response Body: ", string(body))

# JavaScript-Befehle

如果您想在我们返回您的 HTML 之前在您想要抓取的页面中执行自定义 JavaScript 代码，请 联系支持 (打开新窗口) (öffnet neues Fenster) Dies ist ein Beispiel aus der Praxis.