function getTagHTTPObject() {
	var xhr = false;
	if (window.XMLHttpRequest) {
		xhr = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		try {
			xhr = new ActiveXObject("Msxml2.XMLHTTP");
		} catch(e) {
			try {
				xhr = new ActiveXObject("Microsoft.XMLHTTP");
			} catch(e) {
				xhr = false;
			}
		}
	}
	return xhr;
}
function grabTagFile(tagFile) {
	var filehref = ""; 
	var request = getTagHTTPObject();
	if (request) {
		request.onreadystatechange = function() {
			if (this.readyState == 4 && (this.status == 200 || this.status == 304)) {
				parseTagResponse(request);
			}
		}; 
		filehref = "https://" + wpThemeURL + "/wp-json/wp/v2/posts/?tags=" + tagFile;	
		request.open("GET", filehref, true);
		request.send(null);
	}
}
	grabTagFile(tagFile);