I would like to call a javascript Print() function when the js library MathJax finishes to process the visited web page.

At the moment the Print() function is triggered using onload but it seems to stop the Processing Math task of MathJax (demo here); users need to dismiss the browser's Print pop-up to lets MathJax finishes its processing.

I would like to be able to call Print() just when Processing Math in MathJax reaches 100%.
Any ideas?

I would like to call a javascript Print() function when the js library MathJax finishes to process the visited web page.

At the moment the Print() function is triggered using onload but it seems to stop the Processing Math task of MathJax (demo here); users need to dismiss the browser's Print pop-up to lets MathJax finishes its processing.

I would like to be able to call Print() just when Processing Math in MathJax reaches 100%.
Any ideas?

• javascript
• printing
• callback
• mathjax

2 Answers 2

Push the Print mand onto the MathJax processing queue so that it will be called after MathJax finishes typesetting the page. E.g.,

MathJax.Hub.Queue(Print);

or

MathJax.Hub.Queue(function () {
  // do stuff here
  Print();
});

See the documentation at

http://www.mathjax/resources/docs/?queues.html#the-mathjax-processing-queue

for more details.

The MathJax message area has a delay before it is removed so that you can actually read it. The Print() call apparently blocks the javascript that would have removed the message. So you need to add a delay of your own before running Print(). I think the message delay is 600 ms, so if you change your

MathJax.Hub.Queue(Print);

call to

MathJax.Hub.Queue(
  ["Delay",MathJax.Callback,700],
  Print
);

then that should delay your Print() call until after the message is removed.

Davide