JSON object JavaScript: JS proxy JSON object handling

I. When JS meets proxy IP: new ideas for data manipulation

The data collection partners should have encountered this situation: when using JavaScript to process JSON data, suddenly the target site blocked the IP. this time you need not change the code, but change the IP! Just like playing the game was kicked out of the room, change a vest to log in again as simple.

Take a real scenario: an e-commerce platform price monitoring script runs to the 50th request suddenly jammed, the console red prompt "request frequency is too high". At this time, if you access ipipgo's proxy IP service, the script can automatically switch to the export IP to continue to work, just like the crawler installed with theUnlimited Resurrection ArmorThe

// The original request code
fetch('https://api.example.com/data')
  .then(response => response.json())

// Code after accessing the proxy IP
const proxyUrl = 'http://ipipgo-rotating-node:8080'
fetch('https://api.example.com/data', {
  proxy: proxyUrl
})

Second, the Proxy object combat: to JSON wear cloak of invisibility

ES6's Proxy object is simply a customized artifact for proxy IP scenarios. It can intercept the read and write operations of JSON objects, with ipipgo's dynamic IP pool, realizing the realdata steganographyThe

Look at this case: we need to grab product information from a competitor's site, but the other site detects the request characteristics. Wrapping the request parameters in a Proxy and automatically changing the proxy IP for each request is like putting a different mask on each request:

const sensitiveData = { keyword: "pop-up item" };

const protectedData = new Proxy(sensitiveData, {
  get(target, prop) {
    // Randomly switch proxy IPs each time a property is accessed
    const currentProxy = ipipgo.getRandomProxy();
    return Reflect.get(target, prop) + `?proxy=${currentProxy}`; }
  }
}).

console.log(protectedData.keyword);
// Output: popup product?proxy=123.60.123.60:8888

Third, anti-blocking IP three axes (table comparison)

IV. Frequently Asked Questions QA

Q: Why do I still get blocked even if I use a proxy IP?
A: may have encountered these pitfalls: ① IP quality is poor (recommended to use ipipgo exclusive IP) ② switching frequency is not right (recommended to set 5-10 seconds / time) ③ request characteristics are not hidden (with the Proxy object processing)

Q: What should I pay special attention to JSON data processing?
A: three key points: ① timestamp to be randomized ② data encrypted transmission ③ error retry mechanism (ipipgo's API supports automatic reconnection)

Q: How to test whether the proxy IP is effective?
A: Try this detection code:

fetch('https://api.ipipgo.com/checkip')
  .then(res => res.text())
  .then(ip => console.log('Current exit IP:', ip))

V. Adding "teleportation" to the code

Finally, I'd like to share a practical tip: use Proxy in conjunction with the ipipgo API to automatically attach dynamic proxy parameters to each JSON request. It's like wrapping the data with an arbitrary door, so you can go wherever you want!

const createProxyRequest = (baseUrl) => {
  return new Proxy({}, {
    get(_, endpoint) {
      return (params) => {
        const proxy = ipipgo.getNextProxy();
        return fetch(`${baseUrl}/${endpoint}?${new URLSearchParams(params)}`, {
          headers: { 'X-Proxy': proxy }
        });
      }
    }
  });
}

// Example usage
const api = createProxyRequest('https://api.example.com');
api.products({ category: 'electronics' });

This solution has improved the data collection success rate from 67% to 92% in our actual project. especially with ipipgo'spay per volumemode, the cost is reduced by 30% - because there are fewer invalid requests!

(Note: Some of the code examples in this article need to be used with the SDK of ipipgo, see the official website for specific access to the document. Encounter technical problems can directly consult their 7 × 24 technical support, measured response speed than peers at least 2 times faster)