是否可以取消JavaScript中的打印 [英] Is it possible to cancel print in javascript

问题描述

我正在使用以下代码:检测浏览器打印事件以检测用户是否想要打印页面.到目前为止，它可以按预期工作.

I am using the code found here: Detecting browser print event to detect if the user wants to print the page. So far it works as intended.

在"afterPrint"功能中，我调用了一个函数，该函数创建并附加一个iframe，该iframe包含另一个页面，该页面具有需要打印的内容的不同且更加打印友好的布局:

In the "afterPrint"-function I call a function which creates and appends an iframe containing another page with a different, and much more printfriendly layout of what needs to be printed:

    function printIframe (printsrc) {
        var iframe = $('iframe#print');
        if (iframe.length == 0)
            iframe = $('<iframe id="print" />').attr('src', printsrc).css("width", "0px").css("height", "0px").css("position", "absolute").css("left", "-9999px").appendTo($("body:first"));
        else
            iframe.attr('src', printsrc);
    };

在更便于打印的页面上，我创建布局，然后调用: window.print();

On the more printerfriendly page I create my layout and then call: window.print();

通过创建和附加iframe，用户将停留在浏览器中的页面上，但是打印布局有所不同.

By creating and appending an iframe, the user stays on the page in the browser, but the print layout is different.

似乎要加载对打印机友好的页面，唯一的方法是在打印对话框中取消打印，然后触发afterPrint功能.是否可以通过javascript取消用户的打印对话框?

It seems the only way to get the printerfriendly page to load is by cancelling the print in the print dialog, which then triggers the afterPrint-function. Is it somehow possible to cancel the user's print dialog in javascript ?

谢谢

托马斯

推荐答案

否，无法使用Java取消打印事件.

No it is not possible to cancle the print event using Javascript.

阅读此内容: [MDN，预印本-可取消:否]

Read this: [MDN, beforeprint - Cancelable:NO]

另请参见小提琴:

var beforePrint = function() {
        console.log('Functionality to run before printing.');
        alert('cancelable : '+event.cancelable)
    };

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