Assume an HTML page:
假设一个HTML页面:
<html>
<body>
.. html content (outside of our control) ..
.. javascript block ..
.. some more html content (outside of our control) ..
</body>
</html>
<html>
<Assume an HTML page:
假设一个HTML页面:
<html>
<body>
.. html content (outside of our control) ..
.. javascript block ..
.. some more html content (outside of our control) ..
</body>
</html>
<html>
<