<a href="https://www.baidu.com" id="homepage">网站主页</a>
$('#homepage').attr('href', 'https://www.02405.com')
#homepage选择idhomepage的元素 attr设置指定的属性值
'href', 'https://www.02405.com'href 属性修改为 https://www.02405.com
(adsbygoogle = window.adsbygoogle || []).push({});