admin管理员组

文章数量:1387308

Need a working code with only javascript and no extra library files (-> jquery,...) That take a screenshot from the whole webpage. (top to bottom page)

Current i have this which does not work why?

<script type="text/javascript">
document.addEventListener('DOMContentLoaded', function () {

var window = document.getElementById('item');
var canvas = document.getElementById('my-canvas');
var ctx = canvas.getContext("2D");
ctx.drawImage(window, 0,0, 100, 200, "rgb(255,255,255)");
canvas.toDataURL("image/png");

});
</script>
</head>
<body id="item">
test website
<canvas id='my-canvas'></canvas>

Need a working code with only javascript and no extra library files (-> jquery,...) That take a screenshot from the whole webpage. (top to bottom page)

Current i have this which does not work why?

<script type="text/javascript">
document.addEventListener('DOMContentLoaded', function () {

var window = document.getElementById('item');
var canvas = document.getElementById('my-canvas');
var ctx = canvas.getContext("2D");
ctx.drawImage(window, 0,0, 100, 200, "rgb(255,255,255)");
canvas.toDataURL("image/png");

});
</script>
</head>
<body id="item">
test website
<canvas id='my-canvas'></canvas>
  • javascript
  • html
  • canvas
Share Improve this question edited Apr 8, 2013 at 16:29 mplungjan 179k28 gold badges182 silver badges240 bronze badges asked Apr 8, 2013 at 16:25 user1731468user1731468 1,0102 gold badges11 silver badges32 bronze badges 5
  • Reopened... You can post your answer. – Robert Harvey Commented Apr 8, 2013 at 20:21
  • html5rocks./en/tutorials/streaming/screenshare – mplungjan Commented Apr 8, 2013 at 20:25
  • Please link to the duplicate you found, Robert – mplungjan Commented Apr 8, 2013 at 20:53
  • @mplungjan: It's in the edit history. – Robert Harvey Commented Apr 9, 2013 at 15:08
  • is that visible to everybody? If not, then stackoverflow./questions/4912092/… – mplungjan Commented Apr 9, 2013 at 15:43
Add a ment  | 

2 Answers 2

Reset to default 2

It's wasn't easy but for the other people look to the browser engine. Because thanks to the use of the blob (kindly clone the whole webpage).

urlsToAbsolute(document.images);
urlsToAbsolute(document.querySelectorAll("link[rel='stylesheet']"));
urlsToAbsolute(document.scripts);

var screenshot = document.documentElement.cloneNode(true);
var blob = new Blob([screenshot.outerHTML], {type: 'text/html'});
window.open(window.URL.createObjectURL(blob));
screenshot.dataset.scrollX = window.scrollX;
screenshot.dataset.scrollY = window.scrollY;
screenshot.style.pointerEvents = 'none';
screenshot.style.overflow = 'hidden';
screenshot.style.userSelect = 'none';

var script = document.createElement('script');
script.textContent = '(' + addOnPageLoad_.toString() + ')();';
screenshot.querySelector('body').appendChild(script);

window.addEventListener('DOMContentLoaded', function(e) {
    var scrollX = document.documentElement.dataset.scrollX || 0;
    var scrollY = document.documentElement.dataset.scrollY || 0;
    window.scrollTo(scrollX, scrollY);
});

I found you can read more in the chromium project: http://www.html5rocks./en/tutorials/streaming/screenshare/

You could try something like phantom.js. It is a "headless WebKit scriptable with a JavaScript API" that allows you to do screen capture.

From my experience it works well.

本文标签： javascriptTake screenshot of the whole webpageStack Overflow

版权声明：本文标题：javascript - Take screenshot of the whole webpage - Stack Overflow 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1744531462a2611063.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。