版权声明:本文为博主原创文章,发现错误请谅解并提醒博主。 https://blog.csdn.net/qq_36430463/article/details/86473828
<script type="text/javascript" src="javascripts/html2canvas.js"></script>
<script type="text/javascript" src="javascripts/canvas2image.js"></script>
<script type="text/javascript" src="javascripts/base64.js"></script>
<script type="text/javascript">
var content = document.getElementById("mainB");
// 进行canvas生成
function btnSave(){
html2canvas(content, {
onrendered: function(canvas) {
//添加属性
canvas.setAttribute('id','thecanvas');
//读取属性值
// var value= canvas.getAttribute('id');
document.getElementById('images').appendChild(canvas);
Download();
}
});
}
function Download(){
var oCanvas = document.getElementById("thecanvas");
/*自动保存为png*/
// 获取图片资源
var img_data1 = Canvas2Image.saveAsPNG(oCanvas, true).getAttribute('src');
saveFile(img_data1, 'img');
}
function saveFile(data, filename){
var save_link = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
save_link.href = data;
save_link.download = filename;
var event = document.createEvent('MouseEvents');
event.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
save_link.dispatchEvent(event);
};
</script>