当将脚本插入元素的影子根时,是否有一种方法可以引用宿主元素?
var element = document.createElement('div');
var script = document.createElement('script');
script.innerHTML = 'console.log(host)'; // << How to get host element??
var shadow = element.createShadowRoot();
shadow.appendChild(script);
document.body.appendChild(element);