75 lines
3.2 KiB
JavaScript
75 lines
3.2 KiB
JavaScript
function init() {
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if (window.location.href.startsWith('https://www.aliexpress.us/item/')) {
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const popup = document.createElement("div")
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popup.innerText = "下载图片"
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const styles = {
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position: "fixed",
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right: '10px',
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top: '60px',
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zIndex: 9999,
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padding: "8px",
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background: "#409EFF",
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color: "#fff",
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borderRadius: "8px",
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cursor: "pointer"
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}
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for (const e in styles) {
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popup.style[e] = styles[e]
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}
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popup.addEventListener('click', async () => {
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let obj = window.runParams.data;
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let id = obj.productInfoComponent.idStr
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var baseList = [];
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var downloadList = []
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var imgObjList = document.querySelectorAll('#product-description img')
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for (var i = 0; i < imgObjList.length; i++) {
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baseList.push({type: 0, index: i+1, src: imgObjList[i].src})
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}
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for (var j = 0; j < obj.imageComponent.imagePathList.length; j++) {
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baseList.push({type: 1, index: j+1, src: obj.imageComponent.imagePathList[j]})
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}
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var zip = new JSZip();
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var imgsBanner = zip.folder("轮插图");
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var imgsDetail = zip.folder("详情图");
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for (var k = 0; k < baseList.length; k++) {
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let type = baseList[k].type
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let index = baseList[k].index
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let image = new Image();
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// 解决跨域 Canvas 污染问题
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image.setAttribute("crossOrigin", "anonymous");
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image.onload = function () {
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let canvas = document.createElement("canvas");
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canvas.width = image.width;
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canvas.height = image.height;
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let context = canvas.getContext("2d");
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context.drawImage(image, 0, 0, image.width, image.height);
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let url = canvas.toDataURL(); // 得到图片的base64编码数据
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canvas.toDataURL("image/png");
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downloadList.push({type: type, index: index, data: url.substring(22)}); // 去掉base64编码前的 data:image/png;base64,
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if (downloadList.length === baseList.length && downloadList.length > 0) {
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for (let l = 0; l < downloadList.length; l++) {
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if (downloadList[l].type == '0') {
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imgsDetail.file(`详情图${downloadList[l].index}.png`, downloadList[l].data, { base64: true });
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} else if (downloadList[l].type == '1') {
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imgsBanner.file(`轮播图${downloadList[l].index}.png`, downloadList[l].data, { base64: true });
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}
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}
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zip.generateAsync({ type: "blob" }).then(function (content) {
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// see FileSaver.js
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saveAs(content, "aliexpress_" + id + ".zip");
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});
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}
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};
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image.src = baseList[k].src;
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}
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})
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document.body.appendChild(popup)
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}
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}
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init(); |