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JavaScript Print Screen

Posted on 2013-11-14
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Last Modified: 2013-12-06
I have a web page in ASP.NET which uses a 3rd party graphing tool to display some data. My client would like the ability to simply click a button on the page in order to Print Screen and capture the contents of the active window (or a portion of the web page that we might define e.g. the graph). I assume there will be a way of doing this with JavaScript but we would need to avoid any security warnings if possible.
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Question by:guswebb
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10 Comments
 
LVL 33

Expert Comment

by:Big Monty
ID: 39648169
just use:

window.print()
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LVL 33

Expert Comment

by:Big Monty
ID: 39648177
to put it in a link:

<A HREF="javascript:window.print()">Click to Print This Page</A>

or a button:

<INPUT TYPE="button" onClick="window.print()">
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Expert Comment

by:COBOLdinosaur
ID: 39648278
And if you only want to print specific parts of the page you can use a print stylesheet to hide the parts you don't want printed.

Cd&
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by:guswebb
ID: 39648316
I may not have been sufficiently clear. I want to screen grab i.e. create an image of what is on screen in the currently active window, and have this held in the clipboard so that the image can be pasted in to PowerPoint for example, not simply launch the printer properties window to send this to a physical printer.
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Big Monty earned 500 total points
ID: 39648372
nothing in your original post is there a mention of a screen shot, only Print Screen...

to do what you're asking now, you may want to look into html2canvas:

http://html2canvas.hertzen.com/
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Author Comment

by:guswebb
ID: 39648846
I assumed you would be familiar with what Print Screen is (not the same as print screen) not least when in the context of 'capturing the screen contents' or 'a portion of the page e.g. a graph' - my bad, apologies!

That looks like some interesting code which might very well do what I'm looking for. I shall have a play around with this and let you know if it works for my requirement.
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by:Rob
ID: 39701082
I've requested that this question be deleted for the following reason:

Not enough information to confirm an answer.
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LVL 33

Expert Comment

by:Big Monty
ID: 39701083
The link I sent does exactly what the OP asked, and I can confirm it works, as I've used it before.

I don't really care about the points, but rather it be PAQ'ed so that someone else may find it useful.
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Author Comment

by:guswebb
ID: 39701470
The HTML2 canvas material was very useful, thanks.
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