Javascript 使用HTML5制作块的屏幕截图
我想转换图像中Javascript 使用HTML5制作块的屏幕截图,javascript,html,canvas,Javascript,Html,Canvas,我想转换图像中div块的内容,并提供给用户下载 <!DOCTYPE html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <style type="text/css"> div { width:200px; background-color: green;
div
块的内容,并提供给用户下载
<!DOCTYPE html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<style type="text/css">
div {
width:200px;
background-color: green;
}
</style>
<script type="text/javascript" src="https://github.com/niklasvh/html2canvas/releases/download/0.4.1/html2canvas.js"></script>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
</head>
<body>
<div id="downimg">
<div>some text</div>
</div>
<script language="javascript">
function downimg(){
html2canvas($('#downimg'), {
onrendered: function (canvas) {
var img = canvas.toDataURL('image/png').replace("image/png", "image/octet-stream");
window.location.href = img;
}
});
}
</script>
<a href="javascript:void(0)" onClick="downimg()" >SAVE</a>
</body>
</html>
div{
宽度:200px;
背景颜色:绿色;
}
一些文本
函数downimg(){
html2canvas($('downimg'){
onrendered:函数(画布){
var img=canvas.toDataURL('image/png')。替换(“image/png”,“image/octet-stream”);
window.location.href=img;
}
});
}
如何在不使用服务器技术的情况下为映像提供扩展名
示例:'image.png'您可以向锚元素添加
下载
属性
<a download="image.png" href="javascript:void(0)" onClick="downimg()" >SAVE</a>
@adrianpruss我同意你的观点!