Question

因此，我试图建立一个加载某些内容的新窗口（这是因为该内容位于iframe中，而chrome在尝试打印时没有显示该iframe中的任何内容）。该新窗口允许用户打印，然后关闭。但是，在较慢的浏览器上，在装入打印盒之前会触发关闭功能，从而导致窗口关闭。我有办法在开门前检查打印盒以防止这种情况吗？

                // Check if the browser is chrome. If it is, load the iframe into a new window to print
                // as chrome doesnt allow for iframes to be printed within a page. if not, just print the page.

                var isChrome = /Chrome/.test(navigator.userAgent) && /Google Inc/.test(navigator.vendor);
                if (isChrome) {
                    // Define iframe containing heatmap and a new window to print it in
                    var iframe = document.getElementById("heatmap");
                    var printWindow = window.open("","printwindow");

                    // Create css link for print window
                    var css = document.styleSheets[2].href;
                    var link = document.createElement("link");
                    link.type = "text/css";
                    link.rel = "stylesheet";
                    link.href = css;

                    // Create print window
                    printWindow.document.write("<html><head><title>Heatmap</title></head><body></body></html>");
                    printWindow.document.head.appendChild(link);
                    printWindow.document.body.appendChild(iframe);

                    // Print window and close after 3s to allow browser time to load iframe contents.
                    // Then reload the page to remove issues from duplicated ids.
                    setTimeout(function(){
                        printWindow.print();
                        printWindow.close();
                        window.location.reload(true);
                    }, 3000);
                } else {
                    window.print();
                    return false;
                }

打印页面后关闭窗口

0 个答案: