Ajax

<?php 
echo 'foobar';

window.onload = function() {
	let phpPath = window.location.href+'/files4u/inc/use/pdf.php';
	const createPdf = {};
	createPdf.init = () => {
		console.log('createPdf.init() was called');

		let xhr = null;
		try{
			xhr = new XMLHttpRequest();
		}catch(e){
			console.warn('Browser is not xhr compatible');
		}
		if (xhr) {			
			xhr.open('GET', phpPath, true);
			xhr.onreadystatechange = function(){
				if (this.readyState === 4 && this.status === 200) {
					console.log('this.responseText', this.responseText);
					console.log('this.response', this.response);
				}
			};
			xhr.send(null);
		}
	};
	
  	// Immediately Invoke Function
	(function initCreatePdf() {
		console.log('initCreatePdf() was called');
		createPdf.init();
	})()
};