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export const downloadImage = (imgsrc, name) => { //下载图片地址和图片名
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var image = new Image(); |
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image.setAttribute("crossOrigin", "anonymous"); |
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image.onload = function() { |
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var canvas = document.createElement("canvas"); |
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canvas.width = image.width; |
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canvas.height = image.height; |
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var context = canvas.getContext("2d"); |
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context.drawImage(image, 0, 0, image.width, image.height); |
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var url = canvas.toDataURL("image/png"); //得到图片的base64编码数据
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var a = document.createElement("a"); // 生成一个a元素
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var event = new MouseEvent("click"); // 创建一个单击事件
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a.download = name || "photo"; // 设置图片名称
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a.href = url; // 将生成的URL设置为a.href属性
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a.dispatchEvent(event); // 触发a的单击事件
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}; |
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image.src = imgsrc; |
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} |