使用html2canvas将页面转成图，用canvas2image下载

之前在网上找到一个用 <a> 的 download属性下载的方法，确实很简单也很方便，但此方法不支持IE，无奈又找到另一方法。使用html2canvas将页面转成图，用canvas2image下载本例使用的版本：html2canvas@1.0.0-alpha.12canvas2image@1.0.5安装npm install html2canvas canvas2image –save引入import html2canvas from ‘html2canvas’;require(’./canvas2image.js’);canvas2image.js 需要改动一下，以便绑在window上(function($){ Canvas2Image = function () { … }}_dataURL 可以用来回显，Canvas2Image.saveAsPNG(canvas) 会直接下载。Canvas2Image提供了下面几种方法:Canvas2Image.saveAsImage(canvasObj, width, height, type)Canvas2Image.saveAsPNG(canvasObj, width, height)Canvas2Image.saveAsJPEG(canvasObj, width, height)Canvas2Image.saveAsGIF(canvasObj, width, height)Canvas2Image.saveAsBMP(canvasObj, width, height)Canvas2Image.convertToImage(canvasObj, width, height, type)Canvas2Image.convertToPNG(canvasObj, width, height)Canvas2Image.convertToJPEG(canvasObj, width, height)Canvas2Image.convertToGIF(canvasObj, width, height)Canvas2Image.convertToBMP(canvasObj, width, height)在vue中可以用$refs 确定DOM；backgroundColor: null，此句可使转出的图没有白边 methods: { toImage() { let _this = this; html2canvas(this.$refs.index,{ backgroundColor: null }).then((canvas) => { let _dataURL = canvas.toDataURL(“image/png”); // _this.dataURL = _dataURL; Canvas2Image.saveAsPNG(canvas) }); },