How API enables cross-origin requests to anywhere.

When the application requested another application placed on a different server. your browser doesn’t allow the request due to a security issue.
There is some way to get the data from another application page or API for this we need to use the proxy URL.
let’s see the example:-

/* cors-anywhere - This API enables cross-origin requests to anywhere.*/
const proxyurl = "https://cors-anywhere.herokuapp.com/";
/* Request Url */
// const requestUrl = "http://pollaweb.com/nmr/playingnow.txt";  
const requestUrl = "https://www.programiz.com/wp-content/themes/programiz";  
/* Requesting the Request URL Using the ProxyUrl */
$( document ).ready(function() {
	$(".status").html("Please be patient we are preparing the request Data for you!");
});

fetch(proxyurl + requestUrl)  
.then(res => {
	var parent = [];
	res.text().then((pollawebData)=>{
		var dataArr = pollawebData.split("\n");
		var child = [];
		dataArr.forEach(function(entry) {
		    parent.push(entry.split("-"))
		});
		console.log(parent);
		$(".status").html("Done Plase check the Console.");
	})
})
.catch(() => {
	console.log("Can’t access " + requestUrl + " response. Blocked by browser?");
})