How Can You Implement Print Functionality Across All Browsers?

Cross-Browser Equivalents for IE's onbeforeprint() and onafterprint()

Web developers often face the challenge of implementing printing functionality across multiple browsers. While Internet Explorer provides the convenient onbeforeprint() and onafterprint() events, other browsers require a more robust approach.

Window.matchMedia for Cross-Browser Detection

Modern browsers like Chrome, Firefox, and Internet Explorer 10 offer support for window.matchMedia. This API allows for the detection of CSS media queries taking effect, such as printing. By combining window.matchMedia with window.onbeforeprint/window.onafterprint, a cross-browser solution can be achieved.

Event Listeners for Print Detection

Using the following code snippet, developers can detect print events in most major browsers:

<code class="javascript">if ('matchMedia' in window) {
    // Chrome, Firefox, and IE 10 support mediaMatch listeners
    window.matchMedia('print').addListener(function(media) {
        if (media.matches) {
            beforePrint();
        } else {
            // Fires immediately, so wait for the first mouse movement
            $(document).one('mouseover', afterPrint);
        }
    });
} else {
    // IE and Firefox fire before/after events
    $(window).on('beforeprint', beforePrint);
    $(window).on('afterprint', afterPrint);
}</code>

Additional Resources

For further insights and code examples, refer to the following resource:

• [Detecting Print Requests with JavaScript](http://tjvantoll.com/2012/06/15/detecting-print-requests-with-javascript/)

By leveraging window.matchMedia and event listeners, web developers can implement printing functionality that is compatible with a wide range of browsers, ensuring a seamless printing experience for users.

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