必须同源（访问的网站域名与服务器域名一致）才能下载
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downs() { var alink = document.createElement("a"); alink.href = this.shop.shoppic_url; alink.download = "pic"; //图片名 alink.click();} |
解决图片不同源下载问题
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downloadIamge(imgsrc, name) {//下载图片地址和图片名 var image = new Image(); // 解决跨域 Canvas 污染问题 image.setAttribute("crossOrigin", "anonymous"); image.onload = function() { var canvas = document.createElement("canvas"); canvas.width = image.width; canvas.height = image.height; var context = canvas.getContext("2d"); context.drawImage(image, 0, 0, image.width, image.height); var url = canvas.toDataURL("image/png"); //得到图片的base64编码数据 var a = document.createElement("a"); // 生成一个a元素 var event = new MouseEvent("click"); // 创建一个单击事件 a.download = name || "photo"; // 设置图片名称 a.href = url; // 将生成的URL设置为a.href属性 a.dispatchEvent(event); // 触发a的单击事件 }; image.src = imgsrc;},downs(){ this.downloadIamge(this.pic.url, 'pic')} |