JS下载图片

JS下载图片兼容IE

//这里只是将canvas转的图片 进行下载。
//如果是外链的图片：IE下转成canvas再转成Blob类型即可,其他浏览器a标签改href
var MIME_TYPE = "image/png";
var imgURL = canvasEle.toDataURL(MIME_TYPE);//canvas转图片
//判断是否IE
if (!!window.ActiveXObject || "ActiveXObject" in window) {
      var blob = canvasEle.msToBlob();
      window.navigator.msSaveBlob(blob,'图片名字.png');
 } else {
      var dlLink = document.createElement('a');
      dlLink.download = '图片名字.png' ;
      dlLink.href = imgURL;

      document.body.appendChild(dlLink);
      dlLink.click();
      document.body.removeChild(dlLink);
}