我搜索了很多,找到了一个完美的解决方案:)

使用onclick事件

function printCanvas()

{

var dataUrl = document.getElementById('anycanvas').toDataURL(); //attempt to save base64 string to server using this var

var windowContent = '';

windowContent += ''

windowContent += '

Print canvas';

windowContent += '

'

windowContent += '';

windowContent += '';

windowContent += '';

var printWin = window.open('','','width=340,height=260');

printWin.document.open();

printWin.document.write(windowContent);

printWin.document.close();

printWin.focus();

printWin.print();

printWin.close();

}