createImg(store, data) {

    let timer = setTimeout(function (params) {

      let _canvas = document.querySelector(".setPictureSection");

      var w = parseInt(window.getComputedStyle(_canvas).width);

      var h = parseInt(window.getComputedStyle(_canvas).height);

      //将canvas画布放大若干倍，然后盛放在较小的容器内，就显得不模糊了

      var canvas2 = document.createElement("canvas");

      var scale = 2;

      canvas2.width = w * 2;

      canvas2.height = h * 2;

      canvas2.style.width = w + "px";

      canvas2.style.height = h + "px";

      canvas2.getContext("2d").scale(scale, scale);

      html2canvas(document.querySelector(".setPictureSection"), {

        // allowTaint: true,

        // taintTest: false,

        scale: 1,

        dpi: window.devicePixelRatio * 5,

        // canvas: canvas2,

        userCORS: true,

        backgroundColor: '#ffffff',

        width: w,

        height: h,

        x: 0,

        y: 0,

      }).then(function (canvas) {

        //document.body.appendChild(canvas);

        //canvas转换成url，然后利用a标签的download属性，直接下载，绕过上传服务器再下载

        document.querySelector(".down")

          .setAttribute("href", canvas.toDataURL("image/png", 1.0));

        $(".down")[0].click();

      });

      timer = null;

    }, 350)

  },