@43081j/shadow-utils 中文文档教程
shadow-utils
这个包提供了一组有用的实用程序来处理影子 DOM， 主要用于可能想要中断的测试环境情况 封装。
querySelector and querySelectorAll
以类似于本机 querySelector 的方式运行，但忽略阴影 DOM 边界，因为它遍历影子根并继续 在其中搜索给定的选择器。
Usage
// find all elements with the class, "foo"
querySelector('.foo');
// find all elements with the class "foo" within a specific node
querySelector('.foo', node);
// pass an options object
querySelector('.foo', node, options);
Options
这两个函数都可以采用这样的选项对象：
querySelector('.foo', document, options);
支持以下选项：
{
// If true, enables cross-boundary selector support.
// For example, `.foo .bar` would match even if `.foo` and `.bar` are
// in different shadow roots (but still descendant-like).
"crossBoundary": false
}
getHost
检索给定节点的宿主文档或元素。
这与手动调用 getRootNode() 类似，但只会 如果它是文档或影子根主机，则返回结果，这意味着 断开连接的节点将返回 null。
Usage
// get the host of a given node
getHost(node);
shadow-utils
This package provides a set of useful utilities for dealing with shadow DOM, primarily for test environment situations where one might want to break encapsulation.
querySelector and querySelectorAll
Behaves in a similar way to the native querySelector but ignores shadow DOM boundaries, in that it traverses into shadow roots and continues searching within them for the given selector.
Usage
// find all elements with the class, "foo"
querySelector('.foo');
// find all elements with the class "foo" within a specific node
querySelector('.foo', node);
// pass an options object
querySelector('.foo', node, options);
Options
Both of these functions can take an options object like so:
querySelector('.foo', document, options);
The following options are supported:
{
// If true, enables cross-boundary selector support.
// For example, `.foo .bar` would match even if `.foo` and `.bar` are
// in different shadow roots (but still descendant-like).
"crossBoundary": false
}
getHost
Retrieves the host document or element of a given node.
This behaves similar to calling getRootNode() manually, but will only return a result if it is a document or a shadow-root host, meaning disconnected nodes will return null.
Usage
// get the host of a given node
getHost(node);
