This is a very simple proxy server to get around CORS issues when an API does not provide JSONP.

This is live at proxy.hackeryou.com.

The set up is very simple, when you make a request with $.ajax you might right it like this.

$.ajax({
	url: 'https://api.site.com/api',
	dataType: 'json',
	method:'GET',
	data: {
		key: apiKey,
		param1: value,
		param2: value
	}
}).then(function(res) {
	...
});

However because of CORS you might not be able to access the API this way. If the API does not offer JSONP you can use this proxy to bypass the CORS issue. To use this proxy you have to change you request to look like this.

$.ajax({
	url: 'https://proxy.hackeryou.com',
	dataType: 'json',
	method:'GET',
	data: {
		reqUrl: 'https://api.site.com/api',
		params: {
			key: apiKey,
			param1: value,
			param2: value
		},
		proxyHeaders: {
			'Some-Header': 'goes here'
		},
		xmlToJSON: false,
		useCache: false
	}
}).then(function(res) {
	/* ... */
});

You can use the Fetch API for making requests too

const proxiedUrl = 'https://api.site.com/api';

const url = new URL('https://proxy.hackeryou.com');
url.search = new URLSearchParams({
  reqUrl: proxiedUrl,
  'params[key]': apiKey,
  'params[param1]': value,
  'params[param2]': value,
  'proxyHeaders[Some-Header]': 'goes here',
});

fetch(url)
  .then(response => response.json())
  .then(data => {
    /* ... */
  });

Note the need to use square bracket query parameter notation [] for the params and proxyHeaders proxy param options!

You pass your information via the data object, in there there are a bunch of options you need to pass.