One of mine application having custom button to print the customer invoice bill. The browser also having default print option (Cntrl + P) to print the window content.

Initially, I resolved this problem by adding:

$(document).ready(function(){
    $(document).keydown(function(event) {
        if (event.ctrlKey==true && (event.which == '80') { //cntrl + p
            event.preventDefault();
        }
    });
 });

But I feel, this is not feasible solution for this. because am here binding this (keydown) event on document. so on each and every key press on application it firing this (keydown) event, and so which is very critical as per as the performance concern.

Is there any other-solution for this, so that i could disable the Cntrl + P (without binding event)?

Note: Important and good thing is our customer uses only Google Chrome browser to access this application.

One of mine application having custom button to print the customer invoice bill. The browser also having default print option (Cntrl + P) to print the window content.

Initially, I resolved this problem by adding:

$(document).ready(function(){
    $(document).keydown(function(event) {
        if (event.ctrlKey==true && (event.which == '80') { //cntrl + p
            event.preventDefault();
        }
    });
 });

But I feel, this is not feasible solution for this. because am here binding this (keydown) event on document. so on each and every key press on application it firing this (keydown) event, and so which is very critical as per as the performance concern.

Is there any other-solution for this, so that i could disable the Cntrl + P (without binding event)?

Note: Important and good thing is our customer uses only Google Chrome browser to access this application.

• javascript
• jquery
• jquery-events

Share Improve this question Follow edited Feb 6, 2023 at 23:03 Brian Tompsett - 汤莱恩 5,8937272 gold badges6161 silver badges133133 bronze badges asked Jul 7, 2012 at 9:44 Niks JainNiks Jain 1,64755 gold badges2727 silver badges5353 bronze badges 1

• By the way: event.ctrlKey==true is exactly the same as just event.ctrlKey because this already returns true or false – Patrick Oscity Commented Jul 7, 2012 at 10:09

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3 Answers 3

Sorted by: Reset to default 2

Have you considered using this instead:

<link rel="alternate" media="print" href="alternativeUrlForPrint.ext" />

JavaScript is all about events, so you won't find a solution that doesn't rely on key events. Do you have actual performance issues? Every browser should be able to handle this.

Or, as a popular quote by Don Knuth puts it:

We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil

As per my understanding, if some one have professional web based POS or business app, so for printing purpose you could use JZebra java applete, this would really resolve your all problems, because it doesn't have any dependencies on browser like print preview or browser's inbuild css etc..