Question

// html data loaded from [http://example.org/some/path]
let htmlSource = `<!DOCTYPE html><html><head></head><body>
 ... <a href="relative"></a> ... 
</body></html>`;

const dom = new DOMParser().parseFromString(htmlSource, 'text/html');

// this returns the value of the attribute as is
dom.links[0].getAttribute('href'); // -> "relative" / nothing new here

// this should resolve urls
dom.links[0].href // -> wait, relative to WHAT??

// if you run this code while being on [http://google.com] you'll get
dom.links[0].href // -> "https://www.google.com/relative"

// Also,

dom.location // -> null / you can't change it

dom.baseURI // -> "https://www.google.com/" / read-only

因此，看起来DOMParser隐式地强制将当前页面location用作新baseURI的{{1}}。

为什么不给开发人员一个选项（第三个参数？）来明确指定文档位置？

是否有办法使HTMLDocument遵守可选的基本URL？解决方法？

Answer 1

您必须在html代码中使用base标签，甚至可以动态添加它。这是您的示例：

const htmlSource = `
<!DOCTYPE html>
<html>
 <head>
  <base href="https://www.example.com/">
 </head>
 <body>
  <a href="relative"></a>
 </body>
</html>`;

const dom = new DOMParser().parseFromString(htmlSource, 'text/html');
console.log('DOM link ->', dom.links[0].href);

将输出：

DOM link -> https://www.example.com/relative

动态添加：

let baseEl = dom.createElement('base');
baseEl.setAttribute('href', 'https://www.example.com');
dom.head.append(baseEl);

DOMParser中的可选baseURI（位置）？

1 个答案: