js文件点击下载，文件上传,获取格式化时间.txt

  downLoadSvgFile() { // 点击下载文件
        let myDate = Date.now();
        let svgFile = document.getElementById("svgContainer").getElementsByTagName("svg")[0];
        var link = document.createElement('a');
        link.style.display = 'none';
        document.body.appendChild(link);
        var blob = new Blob([this.svgToString(svgFile)], {type: 'text/plain'});
        link.href = URL.createObjectURL(blob);
        if (this.fileName.includes(".svg")) {
          link.download = myDate + "_" + this.fileName;
        } else {
          link.download = myDate + "_" + this.fileName + '.svg';
        }
        link.click();
      },
================
svg 保存
  svgToString(svg) {
        let viewBox = svg.getAttribute("viewBox")
        return [
          '<?xml version="1.0" encoding="UTF-8"?>\n',
          '<svg xmlns="http://www.w3.org/2000/svg" viewBox="' + viewBox + '">\n', //viewBox="0 0 600 400"
          svg.innerHTML,
          '</svg>'
        ].join('');
      },
======================
 //上传文件到服务器上
      uploadFile() {
        let _that = this;
        let myDate = this.getTime();
        let svgFile = document.getElementById("svgContainer").getElementsByTagName("svg")[0];
        var blob = new Blob([this.svgToString(svgFile)], {type: 'text/plain'});

        let fileName = "" + myDate + "/" + _that.fileName
        let file = new window.File([blob], fileName)

        let params = new FormData();
        params.append('file', file);
        if (!file) {
          this.messageBox('请上传文件');
          return;
        }
        UploadFile('/svgFileUpload', params, "svgURI").then((res) => {
          if (res.code === 200) {
            _that.printContent("返回文件路径：", res)
            let uploadFilePath = res.path;
            _that.messageBox("文件保存成功", 'success')
          } else {
            _that.$message.error(res.msg);
          }
        }).catch(e => {
          _that.$message.error(e.message);
        })
      },
======================
 getTime() {
        var date = new Date();
        var year = date.getFullYear();
        var month = date.getMonth() + 1;
        var d = date.getDate();
        var hour = date.getHours();
        var minute = date.getMinutes();
        var second = date.getSeconds();
        if (month < 10) {
          month = "0" + month;
        }
        if (d < 10) {
          d = "0" + d;
        }
        if (hour < 10) {
          hour = "0" + hour;
        }
        if (minute < 10) {
          minute = "0" + hour;
        }
        if (second < 10) {
          second = "0" + second;
        }
        return year + "" + month + "" + d + "" + hour + "" + minute + "" + second;
      },
======================