astrojs - 如何将服务器变量传递给 astro 中的客户端 JS？-6ren

astrojs - 如何将服务器变量传递给 astro 中的客户端 JS？

转载作者：行者123 更新时间：2023-12-05 02:26:56

我找到了 this ( github ) google auth 的 html 起始页，我想把它变成一个 astro 组件。我想将其转换为 .astro文件并能够从后端传入 CLIENT_ID 和 API_KEY 的变量。我

这是来自谷歌的 HTML 代码:

<!DOCTYPE html>
<html>
  <head>
    <title>Google Calendar API Quickstart</title>
    <meta charset="utf-8" />
  </head>
  <body>
    <p>Google Calendar API Quickstart</p>

    <!--Add buttons to initiate auth sequence and sign out-->
    <button id="authorize_button" onclick="handleAuthClick()">Authorize</button>
    <button id="signout_button" onclick="handleSignoutClick()">Sign Out</button>

    <pre id="content" style="white-space: pre-wrap;"></pre>

    <script type="text/javascript">
      /* exported gapiLoaded */
      /* exported gisLoaded */
      /* exported handleAuthClick */
      /* exported handleSignoutClick */

      // TODO(developer): Set to client ID and API key from the Developer Console
      const CLIENT_ID = '<YOUR_CLIENT_ID>';
      const API_KEY = '<YOUR_API_KEY>';

      // Discovery doc URL for APIs used by the quickstart
      const DISCOVERY_DOC = 'https://www.googleapis.com/discovery/v1/apis/calendar/v3/rest';

      // Authorization scopes required by the API; multiple scopes can be
      // included, separated by spaces.
      const SCOPES = 'https://www.googleapis.com/auth/calendar.readonly';

      let tokenClient;
      let gapiInited = false;
      let gisInited = false;

      document.getElementById('authorize_button').style.visibility = 'hidden';
      document.getElementById('signout_button').style.visibility = 'hidden';

      /**
       * Callback after api.js is loaded.
       */
      function gapiLoaded() {
        gapi.load('client', intializeGapiClient);
      }

      /**
       * Callback after the API client is loaded. Loads the
       * discovery doc to initialize the API.
       */
      async function intializeGapiClient() {
        await gapi.client.init({
          apiKey: API_KEY,
          discoveryDocs: [DISCOVERY_DOC],
        });
        gapiInited = true;
        maybeEnableButtons();
      }

      /**
       * Callback after Google Identity Services are loaded.
       */
      function gisLoaded() {
        tokenClient = google.accounts.oauth2.initTokenClient({
          client_id: CLIENT_ID,
          scope: SCOPES,
          callback: '', // defined later
        });
        gisInited = true;
        maybeEnableButtons();
      }

      /**
       * Enables user interaction after all libraries are loaded.
       */
      function maybeEnableButtons() {
        if (gapiInited && gisInited) {
          document.getElementById('authorize_button').style.visibility = 'visible';
        }
      }

      /**
       *  Sign in the user upon button click.
       */
      function handleAuthClick() {
        tokenClient.callback = async (resp) => {
          if (resp.error !== undefined) {
            throw (resp);
          }
          document.getElementById('signout_button').style.visibility = 'visible';
          document.getElementById('authorize_button').innerText = 'Refresh';
          await listUpcomingEvents();
        };

        if (gapi.client.getToken() === null) {
          // Prompt the user to select a Google Account and ask for consent to share their data
          // when establishing a new session.
          tokenClient.requestAccessToken({prompt: 'consent'});
        } else {
          // Skip display of account chooser and consent dialog for an existing session.
          tokenClient.requestAccessToken({prompt: ''});
        }
      }

      /**
       *  Sign out the user upon button click.
       */
      function handleSignoutClick() {
        const token = gapi.client.getToken();
        if (token !== null) {
          google.accounts.oauth2.revoke(token.access_token);
          gapi.client.setToken('');
          document.getElementById('content').innerText = '';
          document.getElementById('authorize_button').innerText = 'Authorize';
          document.getElementById('signout_button').style.visibility = 'hidden';
        }
      }

      /**
       * Print the summary and start datetime/date of the next ten events in
       * the authorized user's calendar. If no events are found an
       * appropriate message is printed.
       */
      async function listUpcomingEvents() {
        let response;
        try {
          const request = {
            'calendarId': 'primary',
            'timeMin': (new Date()).toISOString(),
            'showDeleted': false,
            'singleEvents': true,
            'maxResults': 10,
            'orderBy': 'startTime',
          };
          response = await gapi.client.calendar.events.list(request);
        } catch (err) {
          document.getElementById('content').innerText = err.message;
          return;
        }

        const events = response.result.items;
        if (!events || events.length == 0) {
          document.getElementById('content').innerText = 'No events found.';
          return;
        }
        // Flatten to string to display
        const output = events.reduce(
            (str, event) => `${str}${event.summary} (${event.start.dateTime || event.start.date})\n`,
            'Events:\n');
        document.getElementById('content').innerText = output;
      }
    </script>
    <script async defer src="https://apis.google.com/js/api.js" onload="gapiLoaded()"></script>
    <script async defer src="https://accounts.google.com/gsi/client" onload="gisLoaded()"></script>
  </body>
</html>

我很快发现无法将这些变量模板化到 <script> 中标签。我尝试将变量附加到 window和其他偷偷摸摸的东西都没有用。

最佳答案

您可以通过定义define:vars 将服务器变量共享到客户端<script /> 上的属性或 <style /> .astro 中的标签模板。

阅读 astro 文档 here获取更多信息。

示例如下(来源:Astro 文档)

---
const foregroundColor = "rgb(221 243 228)"; // CSS variable shared
const backgroundColor = "rgb(24 121 78)"; // CSS variable shared
const message = "Astro is awesome!"; // Javascript variable shared
---

/* CSS variables to share */
<style define:vars={{ textColor: foregroundColor, backgroundColor }}>
  h1 {
    background-color: var(--backgroundColor);
    color: var(--textColor);
  }
</style>

/* Javascript variables to share */
<script define:vars={{ message }}>
  alert(message);
</script>

There is also a concept of sharing states using nanostore stated in documentation . Itallows sharing states between components at framework level onclient-side. Not between client and server.

Theoretically sharing states from server to client can be done usinghydration technique by combining define:vars and nanostorelibrary map api during the onLoad event may be 🧪.

关于astrojs - 如何将服务器变量传递给 astro 中的客户端 JS？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/73511984/

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astrojs - 如何将服务器变量传递给 astro 中的客户端 JS？