onbeforeprint和onafterprint在Chrome和IE中不起作用？ [英] onbeforeprint and onafterprint is not working in Chrome and IE?

问题描述

我在我的项目中使用打印（使用HTML和javascript）。在mozilla onbeforeprint和onafterprint工作正常但没有使用chrome。

I am using printing in my project (Using HTML and javascript). In mozilla onbeforeprint and onafterprint is working properly but not working in chrome.

推荐答案

对Chrome来说有用的是检查'matchmedia'在'窗口'中如下：

What works for Chrome is to check for 'matchmedia' in 'window' as in:

                if ('matchMedia' in window) {
                    window.matchMedia('print').addListener(function (media) {
                    //do before-printing stuff
                    });
                } else {
                    window.onbeforeprint = function () {
                    //do before-printing stuff
                    }
                }

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