>使用之前要引入 html2Canvas.js >https://cdn.bootcss.com/html2canvas/0.5.0-beta4/html2canvas.min.js ~~~ function saveDomImage(html2Canvas, dom, fileName) { if(mui.os.plus) { if(typeof html2Canvas == null) throw Error("html2Canvas is not defined"); if(dom == null) throw Error("saveDomImage param : dom is null"); if(fileName == null || fileName == "") fileName = "untitled.png"; var getPixelRatio = function(context) { var backingStore = context.backingStorePixelRatio || context.webkitBackingStorePixelRatio || 1; return(window.devicePixelRatio || 1) / backingStore; }; var _canvas = document.createElement('canvas'); var ctx = _canvas.getContext('2d'); var ratio = getPixelRatio(ctx); ctx.scale(ratio, ratio); var w = dom.offsetWidth; var h = dom.offsetHeight; _canvas.width = w; _canvas.height = h; _canvas.style.width = w * 　ratio + 'px'; _canvas.style.height = h　 * 　ratio + "px"; html2Canvas(dom, { allowTaint: true, logging: false, profile: true, useCROS: true, canvas: _canvas, onrendered: function(canvas) { var dataUrl = canvas.toDataURL(); var b = new plus.nativeObj.Bitmap('bitblmap'); b.loadBase64Data(dataUrl, function() { /*这里一定要是_doc目录*/ b.save("_doc/" + fileName, { overwrite: true }, function(object) { //保存到相册 plus.gallery.save("_doc/" + fileName, function() { mui.toast("图片已保存到相册"); }, function() { mui.toast("图片保存失败"); }); }, function() { mui.toast("图片保存失败"); }); }, function() { mui.toast("图片保存失败"); }); } }); } } ~~~