通過html2canvas生成一張圖片，發(fā)現(xiàn)checkbox選中項(xiàng)并沒有截圖成功。
<!DOCTYPE html>
<html>
<head>
<title>
html2canvas
</title>
</head>
<body id="myPage" onload="createImage()">
<p style="height: 100px;width: 100px;background-color: blue">
我是p
性別:
<input type="checkbox" name="sex">男
<input type="checkbox" name="sex">女
</p>
</body>
<script type="text/javascript" src="html2canvas.js"></script>
<script type="text/javascript">
function createImage(){
html2canvas(document.getElementById('myPage'),{
allowTaint:true,
height: 500
}).then(function(canvas) {
console.log(canvas);
var aTag = document.createElement("a");
aTag.innerHTML = "This is a test";
aTag.setAttribute("style", "position:absolute; top:50%; z-index:999");
aTag.setAttribute("href", canvas.toDataURL());
aTag.setAttribute("download", "myPic.png");
document.body.appendChild(aTag);
});
}
</script>
</html>頁面以及生產(chǎn)圖片：
1
0
0
可以用的，因?yàn)槟阋堰M(jìn)入頁面就生成圖片了，后面的點(diǎn)擊就沒效果了，可以這么著。
<!DOCTYPE html>
<html>
<head>
<title>
html2canvas
</title>
</head>
<body id="myPage">
<p style="height: 100px;width: 100px;background-color: blue">
我是p
性別:
<input type="checkbox" onchange="createImage()" name="sex">男
<input type="checkbox" onchange="createImage()" name="sex">女
</p>
</body>
<script type="text/javascript" src="https://cdn.bootcss.com/html2canvas/0.5.0-beta4/html2canvas.min.js"></script>
<script type="text/javascript">
var aTag = document.createElement("a");
aTag.innerHTML = "This is a test";
aTag.setAttribute("style", "position:absolute; top:50%; z-index:999");
document.body.appendChild(aTag);
function createImage(){
html2canvas(document.getElementById('myPage'),{
allowTaint:true,
height: 500
}).then(function(canvas) {
console.log(canvas);
aTag.setAttribute("href", canvas.toDataURL());
aTag.setAttribute("download", "myPic.png");
});
}
</script>
</html>
