Knowls

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<td style="background-color:#ffffdd;border:black 1px dashed;">
 
<td style="background-color:#ffffdd;border:black 1px dashed;">
 
<pre>
 
<pre>
 
+
BEGIN_TEXT
 
$PAR
 
$PAR
 
Here is a knowl
 
Here is a knowl
\{ knowlLink("click me", value=>'This is the inside of a knowl.  If you click again, I will go away') \}
+
\{ knowlLink("click me",
$PAR
+
value=>'This is the inside of a knowl.  ' .
 +
'If you click again, I will go away') \}
  
 
$PAR
 
$PAR
 
Here is another knowl
 
Here is another knowl
\{ knowlLink("click me", url=>'url_of_file_with_information') \}
+
\{ knowlLink("click me",  
 +
url=>'url_of_file_with_information') \}
 +
 
 
$PAR
 
$PAR
 
+
knowlLink("a math knowl",
 +
escapeSolutionHTML(EV3P("the sine function is \(\sin(x)\)")));
 +
END_TEXT
 
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<td style="background-color:#ffcccc;padding:7px;">
 
<p>
 
<p>
 
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Knowls appear in the text section of the problem file.  You can specify a value, as in the first example, which gives the text to appear in the Knowl, or the URL of a file with the HTML content for the knowl, as shown in the second example here.
Instead of specifying a value, you can specify the url of a file with html in it, and that html will appear in the knowl. Then you can use one file in multiple places.
+
</p>
 
+
<p>
 +
To include math text in the knowl, it is necessary to pipe the text through EV3P and escapeSolution HTML, as shown in the third example.
 
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<pre>
 
<pre>
return knowlLink($display_text, url=>$envir{'localHelpURL'}.$infoRef);
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return knowlLink($display_text,
 +
url=>$envir{'localHelpURL'}.$infoRef);
 
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As another example, here is the last line of the definition of helpLink() where the knowl  
 
As another example, here is the last line of the definition of helpLink() where the knowl  
 
containing the help message is created after defining the variables which contain the url for the help file.
 
containing the help message is created after defining the variables which contain the url for the help file.
 
Knowls can include variables from earlier in the problem.
 
 
Use knowlLink("link text",escapeSolutionHTML(EV3P("your text with math using standard form)")));
 
 
The escapeSolutionHTML and EV3P are needed to get the math to be handled properly.
 
 
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Revision as of 12:39, 30 June 2014

Knowls


This code fragment shows how to apply a javascript-enabled popup bit of knowledge (a knowl).

Problem Techniques Index

PG problem file Explanation
BEGIN_TEXT
$PAR
Here is a knowl
\{ knowlLink("click me",
value=>'This is the inside of a knowl.  ' .
'If you click again, I will go away') \}

$PAR
Here is another knowl
\{ knowlLink("click me", 
url=>'url_of_file_with_information') \}

$PAR
knowlLink("a math knowl",
escapeSolutionHTML(EV3P("the sine function is \(\sin(x)\)")));
END_TEXT

Knowls appear in the text section of the problem file. You can specify a value, as in the first example, which gives the text to appear in the Knowl, or the URL of a file with the HTML content for the knowl, as shown in the second example here.

To include math text in the knowl, it is necessary to pipe the text through EV3P and escapeSolution HTML, as shown in the third example.

return knowlLink($display_text,
url=>$envir{'localHelpURL'}.$infoRef);

As another example, here is the last line of the definition of helpLink() where the knowl containing the help message is created after defining the variables which contain the url for the help file.

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Problem Techniques Index

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