我试图使用JavaScript/JQuery来截取网页的屏幕截图。请您解释一下我需要遵循的代码步骤?
我试图使用JavaScript/JQuery来截取网页的屏幕截图。请您解释一下我需要遵循的代码步骤?
html2canvas2 JavaScript工具适用于网页截图。您需要使用三个JavaScript库:
1.jquery-1.10.2.min.js
2.html2canvas.js
3.jquery.plugin.html2canvas.js
然后调用capture()函数,它将在新窗口中为您生成基于HTML5画布的屏幕截图。它还会生成图像的base64data值。它仅适用于支持HTML5画布的浏览器。
<script type="text/javascript">
function capture() {
html2canvas($('body'),{
onrendered: function (canvas) {
var imgString = canvas.toDataURL("image/png");
window.open(imgString);
}
});
</script>
在这里,使用html2canvas截取网页的屏幕截图。
示例
<!doctype html>
<html>
<head>
<script type="text/javascript" src="https://html2canvas.hertzen.com/dist/html2canvas.js"></script>
</head>
<body>
<h1>Take screenshot of webpage with html2canvas</h1>
<div class="container" id='container'>
<h1>Devnote is a tutorial.</h1>
</div>
<input type='button' id='but_screenshot' value='Take screenshot' onclick='screenshot();'><br/>
<!-- Script -->
<script type='text/javascript'>
function screenshot() {
html2canvas(document.body).then(function(canvas) {
document.body.appendChild(canvas);
});
}
</script>
</body>
</html>
输出:
<script src="https://raw.githubusercontent.com/amiad/screenshot.js/master/screenshot.js"></script>
并且进行截图:
new Screenshot({success: img => {
// callback function
myimage = img;
}});