$(function () {

$("#saveimg_btn").on("click",function (event) {

event.preventDefault();

html2canvas($("#printtable"), {

allowTaint: true,

taintTest: false,

onrendered: function (canvas) {

canvas.id = "mycanvas";

//document.body.appendChild(canvas);

//生成base64图片数据

var dataUrl = canvas.toDataURL("image/png");

var newImg = document.createElement("img");

newImg.src = dataUrl;

document.body.appendChild(newImg);

$(".no_print").hide();

$("#printtable").hide();

}

});

});

});

 

 <button id="saveimg_btn">生成图片</button>

   <table id="printtable" class="ticket">

<tr>

<td>test</td>

</tr>

</table>