使用HTML2Canvas将Div内容捕获到图像中而不重做任何事情

Question

I am using this code to capture an image displayed within a Div using html2canvas:

$(document).ready(function () {
            $('#<%= btnCapture.ClientID %>').click(function () {
                html2canvas($('#chart_div'), {
                    onrendered: function (canvas) {
                        var img = canvas.toDataURL();
                        window.open(img);
                    }
                });
            });
        });

The code works and opens a new browser window with URL something in base64, but the image is not visible.

Why the image is not visible?

Answer 1

using:"html2canvasproxy.ashx"

            html2canvas($('#chart_div'), {
            "logging": true,
            "proxy": "html2canvasproxy.ashx",                    
            onrendered: function (canvas) {