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var imgObj = document.querySelector(".gdd-materials__cardContainer").querySelectorAll("img");
var exp1 = new RegExp("\\?.*", "g");
function downloadImage(imgsrc, name){
//下载图片地址和图片名
let image = new Image();
// 解决跨域 Canvas 污染问题
image.setAttribute("crossOrigin", "anonymous");
image.onload = function() {
let canvas = document.createElement("canvas");
canvas.width = image.width;
canvas.height = image.height;
let context = canvas.getContext("2d");
context.drawImage(image, 0, 0, image.width, image.height);
let url = canvas.toDataURL("image/png"); //得到图片的base64编码数据
let a = document.createElement("a"); // 生成一个a元素
let 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;
}
for (var i = 0; i < imgObj.length; i ++){
var d = new Date();
var filename = "image-" + d.valueOf().toString() + i;
downloadImage(imgObj[i].src.replace(exp1,""),filename);
}
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