self_antena_checker.js

// http://a.hatena.ne.jp/{user_name}/checklist

function getURL(antenaURL) {
	return new Promise((resolve) => {
		var xhr = new XMLHttpRequest();
		xhr.open('GET', antenaURL);
		xhr.send();
		xhr.addEventListener('readystatechange', (res) => {
			if (xhr.readyState === 4) {
				var div = document.createElement('div');
				div.innerHTML = xhr.responseText;
				resolve(div.querySelector('.table-config a').href);
			}
		});
	});
}

function check(url) {
	var xhr = new XMLHttpRequest();
	xhr.open('GET', 'http://a.hatena.ne.jp/check?url=' + encodeURIComponent(url));
	xhr.send();
	xhr.addEventListener('readystatechange', (res) => {
		if (xhr.readyState === 4) {
			console.log('OK! ' + url);
		}
	});
}

document
	.querySelectorAll('.line a')
	.forEach((a) => {
		getURL(a.href).then((url) => check(url));
	});