一直报错onrendered option is deprecated, html2canvas returns a Promise with the canvas as the value!如下图
图片说明
js代码
$("#btn_upload4").click(function () {
var filename = 1+ "_fansImages.pdf";
// 将 id 为 Modal5 的 div 渲染成 canvas
html2canvas(document.getElementById("Modal5"), {
// 渲染完成时调用，获得 canvas
onrendered: function(canvas) {
// 从 canvas 提取图片数据
var imgData = canvas.toDataURL('image/jpeg');
var canWidth = canvas.width;
var canHeight = canvas.height;
var arrDPI = js_getDPI();//获取显示器DPI
var dpiX = 96;
var dpiY = 96;
if(arrDPI.length>0){
dpiX = arrDPI[0];
dpiY = arrDPI[1];
}
// var doc = new jsPDF("p", "mm", "a4");
var doc = new jsPDF('', 'in', [(canWidth+10)/dpiX,(canHeight+10)/dpiY]);//设置PDF宽高为要显示的元素的宽高，将像素转化为英寸
// doc.addImage(imgData, 'JPEG', 0, 0,210,297);
doc.addImage(imgData, 'JPEG', 0, 0,0,0);
doc.save(filename);
},
background : "#f7f7f7" //设置PDF背景色（默认透明，实际显示为黑色）
});
})
html代码
<div class="modal fade" id="Modal5" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true" style="z-index: 1050;">
<div class="modal-dialog modal-lg" >
<div class="modal-content" style="width:1000px;margin-left:-5%" >
<div class="modal-header" style="height:60px">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="myModalLabel" style="float:left ;">正太分析图</h4>
<button type="button" class="btn btn-default" style="background-color:#337ab7;color:#fff;margin-top:3px;float:right" id="btn_upload4" >打印正太图</button>
</div>
<!--startprint-->
<div class="modal-body">
<div class="ibox" >
<div style="width:21%;height:40%; float:left; border:1px solid;margin-top:30px" >
<p style="text-align: center;">Process Data</p></br>
<div class="col-md-6">LSL:</div>
<div class="col-md-6"><span id="lsl"></span></div>
<div class="col-md-6">Target:</div>
<div class="col-md-6"><span id="Target"></span></div>
<div class="col-md-6">USL:</div>
<div class="col-md-6"><span id="USL"></span></div>
<div class="col-md-6">SampleM:</div>
<div class="col-md-6"><span id="SM"></span></div>
<div class="col-md-6">SampleN:</div>
<div class="col-md-6"><span id="SampleN"></span></div>
<div class="col-md-6">Within:</div>
<div class="col-md-6"><span id="Within"></span></div>
<div class="col-md-6">Overall:</div>
<div class="col-md-6"><span id="Overall"></span></div>
</div>
<!-- echart图 -->
<div id="main" style="width: 500px;height:300px;background-color: #ffffff;margin: 0 auto"></div>
<div style="width: 22%;height:20% ; float:right;margin-top:-31%;">
<div style="border:1px solid;width:150px;height:50px">
<p>————With in</p>
<p>—— ——Over all</p>
</div>
<div style="border:1px solid;width:200px;height:150px;margin-top:5px">
<p style="text-align: center;">Potential(Within)Capabilitys</p>
<div class="col-md-6">Cp:</div>
<div class="col-md-6"><span id="Cp"></span></div>
<div class="col-md-6">CPL:</div>
<div class="col-md-6"><span id="CPL"></span></div>
<div class="col-md-6">CPU:</div>
<div class="col-md-6"><span id="CPU"></span></div>
<div class="col-md-6">CPK:</div>
<div class="col-md-6"><span id="CPK"></span></div>
<div class="col-md-6">CCPK:</div>
<div class="col-md-6"><span id="CCPK"></span></div>
</div>
<div style="border:1px solid;width:200px;height:150px;">
<p style="text-align: center;">Overall Capability</p>
<div class="col-md-6">Pp:</div>
<div class="col-md-6"><span id="Pp"></span></div>
<div class="col-md-6">PPL:</div>
<div class="col-md-6"><span id="PPL"></span></div>
<div class="col-md-6">PPU:</div>
<div class="col-md-6"><span id="PPU"></span></div>
<div class="col-md-6">PPK:</div>
<div class="col-md-6"><span id="PPK"></span></div>
<div class="col-md-6">CPM:</div>
<div class="col-md-6"><span id="CPM"></span></div>
</div>
</div>
<div class="content" style="width: 100%;height:20%;margin-top: 8%;">
<div id="right" style="border:1px solid;width:225px;height:130px;margin-top:5px">
<p style="text-align: center;">O bserv ed Performnance</p>
<div class="col-md-6">PPM < LSL:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmlsl" ></span></div>
<div class="col-md-6">PPM > USL:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmtotal" ></span></div>
<div class="col-md-6">PPM Total:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmusl" ></span></div>
</div>
<div id="mid" style="border:1px solid;width:225px;height:130px;margin-top:5px;">
<p style="text-align: center;">Exp.Within Performance</p>
<div class="col-md-6">PPM < LSL:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmlsls" ></span></div>
<div class="col-md-6">PPM > USL:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmtotals" ></span></div>
<div class="col-md-6">PPM Total:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmusls" ></span></div>
</div>
<div id="left" style="border:1px solid;width:225px;height:130px;margin-top:5px">
<p style="text-align: center;">Exp.Overall Performance</p>
<div class="col-md-6">PPM < LSL:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmlsl1" ></span></div>
<div class="col-md-6">PPM > USL:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmtotal1" ></span></div>
<div class="col-md-6">PPM Total:</div>
<div class="col-md-6" style="text-align:center"><span id="ppmusl1" ></span></div>
</div>
<div id="passTital" style="border:1px solid;width:165px;height:130px;margin-left:5px;margin-top:5px;float:left">
<p style="text-align: center;">Percent Of Pass</p >
<div class="col-md-6">PASS:</div>
<div class="col-md-6" style="text-align:center"><span id="pass" ></span></div>
</div>
</div>
</div>
</div>
</div>
<!--endprint-->
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
</div>
</div><!-- /.modal-content -->
</div><!-- /.modal -->
</div>
你把代码贴一下 ，前端和后台的
你是要把DIV保存为图片对吗？
重新下一份源码，估计是源码有问题
好像如果ie的话jspdf会抛错的
最新的html2canvas已经弃用了onrendered，改成以下代码：
html2canvas(document.body,{ width:200,height:100 }).then(function(canvas){
var imgUri = canvas.toDataURL();
$("body").append('<a href="'+imgUri+'" download="下载的图片">保存图片</a>');
});