vue (本地静态)图片下载到本地，图片保存到本地

 点击事件

    			<div class="orcodebtn" @click="downhander(type)">保存二维码至本地相册</div>

 图片路径

		data(){
			return {
				orcode:require('./images/orcode2.jpg') //图片地址要require
			}
		},

js 代码

			downhander(){
				 this.downloadImg(this.orcode,'pic');
			},
			downloadImg(imgsrc, name){
				var image = new Image();
				// 解决跨域 Canvas 污染问题
				image.setAttribute("crossOrigin", "anonymous");
				image.onload = function() {
					var canvas = document.createElement("canvas");
					canvas.width = image.width;
					canvas.height = image.height;
					var context = canvas.getContext("2d");
					context.drawImage(image, 0, 0, image.width, image.height);
					var url = canvas.toDataURL(); //得到图片的base64编码数据
					console.log(url)

					var a = document.createElement("a"); // 生成一个a元素
					var 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;
			},