Node.js url.resolve(from, to)用法及代碼示例

url.resolve(from, to)

參數

• from <string> to 是相對 URL 時使用的基本 URL。
• to <string> 要解析的目標 URL。

url.resolve() 方法以類似於 Web 瀏覽器解析錨標記的方式解析相對於基本 URL 的目標 URL。

const url = require('node:url');
url.resolve('/one/two/three', 'four');         // '/one/two/four'
url.resolve('http://example.com/', '/one');    // 'http://example.com/one'
url.resolve('http://example.com/one', '/two'); // 'http://example.com/two'

要使用 WHATWG URL API 獲得相同的結果：

function resolve(from, to) {
  const resolvedUrl = new URL(to, new URL(from, 'resolve://'));
  if (resolvedUrl.protocol === 'resolve:') {
    // `from` is a relative URL.
    const { pathname, search, hash } = resolvedUrl;
    return pathname + search + hash;
  }
  return resolvedUrl.toString();
}

resolve('/one/two/three', 'four');         // '/one/two/four'
resolve('http://example.com/', '/one');    // 'http://example.com/one'
resolve('http://example.com/one', '/two'); // 'http://example.com/two'