x^2を微分すると2x←は？

var xhr = new XMLHttpRequest();
var bmlist_url = ‘//blog.seesaa.jp/contents/bmlist.txt’
xhr.open(“GET”, ‘https:’ + bmlist_url, false);

xhr.send();
var blacklist = xhr.responseText;
var url = location.host + location.pathname;
if (blacklist.match(url)) {
console.log(“MATCH”);
document.write(”);
document.write(”);
} else {
console.log(“NOT MATCH”);
document.write(”);
document.write(”);

}