$("#example1").on("click",function(event){if(confirm("是否上传")){ event.preventDefault(); html2canvas($(".jiBMsg"), { crossDomain: true, xhrFields: {withCredentials: true}, ??????allowTaint: true, ????????taintTest: false, ???????background:"#fff", ??????useCORS:true, onrendered: function(canvas) { // ????? alert("111"); canvas.id = "mycanvas"; ??var dataUrl = canvas.toDataURL("image/jpeg");// $("body").append(‘<img src="‘+dataUrl+‘">‘);// ??????var pos = dataUrl.indexOf("4")+2;// ??????dataUrl = dataUrl.substring(pos, dataUrl.length - pos);//去掉Base64:开头的标识字符 ?????????????$.ajax({ ?????????????type: "POST", ?????????????url:url, ?????????????async: false, ?????????????data: { ‘data‘: dataUrl}, ?????????????dataType: "text", ??????????????????????success: function (data) { ?????????????????????????alert(data); ??????????????????????}, ?????????????????????error: function (err) { ????????????????????????console.log(err); ??????????????????????} ?????????????????}); ???????????} ??????}) }})
html2canvas.js截屏并上传到后台
原文地址：https://www.cnblogs.com/dyy-dida/p/9480755.html