beiweiqiang/index.html

## index.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <script>

    document.addEventListener('DOMContentLoaded', function (event) {
      console.log('index.html: 9 ->  -> ', 'dom');
      console.log('index.html: 10 ->  -> ', document.getElementById('img').offsetWidth);
    });

    window.addEventListener('load', function (event) {
      console.log('index.html: 13 ->  -> ', 'load');
      console.log('index.html: 15 ->  -> ', document.getElementById('img').offsetWidth);
    });
  </script>
</head>
<body>
<div>
  123123
</div>
<img id="img" src="https://via.placeholder.com/1500" alt="img">

<script>

</script>
</body>
</html>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Title</title>
	<script>

	document.addEventListener('DOMContentLoaded', function (event) {
	console.log('index.html: 9 -> -> ', 'dom');
	console.log('index.html: 10 -> -> ', document.getElementById('img').offsetWidth);
	});

	window.addEventListener('load', function (event) {
	console.log('index.html: 13 -> -> ', 'load');
	console.log('index.html: 15 -> -> ', document.getElementById('img').offsetWidth);
	});
	</script>
	</head>
	<body>
	<div>
	123123
	</div>
	<img id="img" src="https://via.placeholder.com/1500" alt="img">

	<script>

	</script>
	</body>
	</html>