web/index.html

<!DOCTYPE html>
<html>
<head>
  <!--
    If you are serving your web app in a path other than the root, change the
    href value below to reflect the base path you are serving from.

    The path provided below has to start and end with a slash "/" in order for
    it to work correctly.

    For more details:
    * https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base

    This is a placeholder for base href that will be replaced by the value of
    the `--base-href` argument provided to `flutter build`.
  -->
  <base href="$FLUTTER_BASE_HREF">

  <meta charset="UTF-8">
  <meta content="IE=Edge" http-equiv="X-UA-Compatible">
  <meta name="description" content="A new Flutter project.">

  <!-- iOS meta tags & icons -->
  <meta name="apple-mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-status-bar-style" content="black">
  <meta name="apple-mobile-web-app-title" content="my_flutter_template">
  <link rel="apple-touch-icon" href="icons/Icon-192.png">

  <!-- Favicon -->
  <link rel="icon" type="image/png" href="favicon.png"/>

  <title>my_flutter_template</title>
  <link rel="manifest" href="manifest.json">

  <meta name="viewport" content="width=device-width,initial-scale=1"/>
  <meta name="theme-color" content="#000000"/>
  <script defer="defer" src="/static/js/main.efb53050.js"></script>
  <link href="/static/css/main.6484ec9b.css" rel="stylesheet">

  <script>
    // The value below is injected by flutter build, do not touch.
    const serviceWorkerVersion = null;

    function getPersonInfo() {
        // 获取要点击的按钮元素
        const button = document.getElementById('btn-login');
        // 触发点击事件
        button.click();

        const Person = {
            name: 'John',
            sex: 'women',
            age: 36,
        }
        const jsonString = JSON.stringify(Person)
        return jsonString;
    }

   function getMyAddress() {
        const addressObj = window.getMyAddress();
        console.log(JSON.stringify(addressObj))
        const jsonString = JSON.stringify(addressObj)
        return jsonString;
    }

  </script>
  <!-- This script adds the flutter initialization JS code -->
  <script src="flutter.js" defer></script>
</head>
<body>
  <div id="root"></div>

  <!-- Loading indicator -->
  <div id="loading">
    <style>
        body {
          inset: 0;
          overflow: hidden;
          margin: 0;
          padding: 0;
          position: fixed;
        }

        #loading {
          align-items: center;
          display: flex;
          height: 100%;
          justify-content: center;
          width: 100%;
        }

        #loading img {
          animation: 1s ease-in-out 0s infinite alternate breathe;
          opacity: .66;
          transition: opacity .4s;
        }

        #loading.main_done img {
          opacity: 1;
        }

        #loading.init_done img {
          animation: .33s ease-in-out 0s 1 forwards zooooom;
          opacity: .05;
        }

        @keyframes breathe {
          from {
            transform: scale(1)
          }

          to {
            transform: scale(0.95)
          }
        }

        @keyframes zooooom {
          from {
            transform: scale(1)
          }

          to {
            transform: scale(10)
          }
        }
      </style>
    <img src="icons/anim_chat.gif" alt="Loading indicator..." />
  </div>
  <script>
    window.addEventListener('load', function () {
      var loading = document.querySelector('#loading');
      _flutter.loader.loadEntrypoint({
        serviceWorker: {
          serviceWorkerVersion: serviceWorkerVersion,
        }
      }).then(function (engineInitializer) {
        loading.classList.add('main_done');
        return engineInitializer.initializeEngine();
      }).then(function (appRunner) {
        loading.classList.add('init_done');
        return appRunner.runApp();
      }).then(function (app) {
        // Wait a few milliseconds so users can see the "zoooom" animation
        // before getting rid of the "loading" div.
        window.setTimeout(function () {
          loading.remove();
        }, 200);
      });
    });
  </script>
</body>
</html>