<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>htmltopic</title> <script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script> <script src="http://html2canvas.hertzen.com/dist/html2canvas.js"></script> <style> * { margin: 0; } .test { width:10%; height: 100%; text-align: center; line-height: 100px; background-color: #87CEEB; display: inline-block; vertical-align: top; } canvas { margin-right: 5px; } .down { float: left; margin: 40px 10px; } .down2 { float: left; margin: 40px 30px; } </style> </head> <body> <div class="test"> <table border="1"> <tr> <th>账号</th> <th>密码</th> </tr> <tr> <td>17703491441</td> <td>123456</td> </tr> </table></div> <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> <div><a class="down" href="" download="downImg">下载</a> </div> <div><a class="down2" href="" download="downImg">下载2</a></div> <script> //直接选择要截图的dom,就能截图,但是因为canvas的原因,生成的图片模糊 //html2canvas(document.querySelector('div')).then(function(canvas) { // document.body.appendChild(canvas); //}); //创建一个新的canvas var canvas2 = document.createElement("canvas"); let _canvas = document.querySelector('div'); var w = parseInt(window.getComputedStyle(_canvas).width); var h = parseInt(window.getComputedStyle(_canvas).height); //将canvas画布放大若干倍,然后盛放在较小的容器内,就显得不模糊了 canvas2.width = w * 2; canvas2.height = h * 2; canvas2.style.width = w + "px"; canvas2.style.height = h + "px"; //可以按照自己的需求,对context的参数修改,translate指的是偏移量 // var context = canvas.getContext("2d"); // context.translate(0,0); var context = canvas2.getContext("2d"); context.scale(2, 2); html2canvas(document.querySelector('div'), { canvas: canvas2 }).then(function(canvas) { //document.body.appendChild(canvas); //canvas转换成url,然后利用a标签的download属性,直接下载,绕过上传服务器再下载 document.querySelector(".down").setAttribute('href', canvas.toDataURL()); }); </script> <script language="javascript"> //这是另一种写法 $(function () { $(".down2").click(function () { html2canvas($(".test")).then(function (canvas) { var imgUri = canvas.toDataURL("image/png").replace("image/png", "image/octet-stream"); // 获取生成的图片的url window.location.href = imgUri; // 下载图片 }); //html2canvas($('.tongxingzheng_bg'), { // onrendered: function (canvas) { // var data = canvas.toDataURL("image/png");//生成的格式 // //data就是生成的base64码啦 // alert(data); // } //}); }); }); </script> </body> </html>