JavaScript

This article has been retained as a historical document. It is not up-to-date and the formatting may be lacking. Use the information herein with caution.

It is not recommended to use javascript in a problem currently.

Javascript: PG Code Snippet

This code snippet shows the essential PG code to include javascript in a WeBWorK question. Note that these are insertions, not a complete PG file. This code will have to be incorporated into the problem file on which you are working.

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It might be nice to include a different example than this here.

PG problem file	Explanation
loadMacros("parserNumberWithUnits.pl");	We don't need any changes to the tagging and description or initialization sections of the WeBWorK PG file to include javascript. This particular example, however, involves an answer with units , so we have to include the parser module for that.
## include javascript to open units ## help window HEADER_TEXT(<<EOF); <script language="javascript" type="text/javascript"> <!-- // function unitspopup() { var url = "/webwork2_files/units.html"; var opt = "height=625,width=600,location=no," + "menubar=no,status=no,resizable=yes," + "scrollbars=yes,toolbar=no,"; window.open(url,'examdata_info',opt).focus(); } // --> </script> EOF	In the problem set up section we can include any javascript that is to be inserted into the header of the web page that's created by using the HEADER_TEXT function. Here, we insert in the header of the file the javascript to open a popup window to display a units crib sheet.
BEGIN_TEXT Enter 3 kg: \{ ans_rule(10) \} $BR (include \{htmlLink("javascript:unitspopup()","units")\})	We can then use the function in the problem; here we include it as a link.
ANS( NumberWithUnits("3 kg")->cmp() );	No changes are needed in the answer and solution section of the file, except any use of the javascript that one uses there. Here we don't have any changes.

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