html constant
String
const html
HTML string that is loaded into the WebView when the widget is built.
Implementation
static const String html = '''
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<script src="https://js.tosspayments.com/v1/payment"></script>
<script type='text/javascript'>
TosspaymentsReady.postMessage('');
</script>
</head>
<body>
</body>
</html>
''';