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defer_js blank screen when no body is present #1325

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jeffkaufman opened this issue Jun 24, 2016 · 2 comments
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defer_js blank screen when no body is present #1325

jeffkaufman opened this issue Jun 24, 2016 · 2 comments

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@jeffkaufman
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Testing defer_js on a very simple page I see:

example1.js
  document.write("hello ");

example2.js
  document.write("world");

djs.html
  <script src="example1.js"></script>
  <script src="example2.js"></script>

When run normally I see "hello world", as expected. When run with defer_javascript I see a blank screen.

Test it here: http://www.jefftk.com/djs?PageSpeedFilters=defer_javascript

Here are WPT runs for Chrome, FF, and Safari showing the same thing:

If I add a <body> tag it works as expected and writes out "hello world".
@jeffkaufman
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Moved from #1054

@jeffkaufman
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I think this is not a problem in practice, since it only affects tiny demo pages. If we see this causing problems elsewhere we should reopen.

@jeffkaufman jeffkaufman mentioned this issue Jun 24, 2016
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@jeffkaufman