上传图片

  var f = document.getElementById("file").files[0];
  var reads = new FileReader();
  reads.readAsDataURL(f);
  reads.onload = function(e) {
    that.form3[indexs].ef_head = this.result;
    var params = new FormData();
    params.append("file", that.dataURLtoBlob(that.form3[indexs].ef_head));
    that
      .$ajax({
        method: "post",
        url: that.actionUrl,
        data: params,
        async: true,
        cache: false,
        contentType: false,
        processData: false,
        dataType: "json"
      })
      .then(function(response) {
        if (response.data.code == 200) {
          // debugger
          that.form3[indexs].ef_head = response.data.url;
          that.$store.commit("setFamilyData", that.form3);
        } else if (response.data.code == "401") {
          that.$message({
            message: response.data.message,
            type: "warning"
          });
          // that.$router.push("/login");
        } else {
          that.$message.error({
            message: response.data.message
          });
        }
        that.loading = false;
      })
      .catch(function(error) {
        that.$message.error(error);
        that.loading = false;
      });
    that.$forceUpdate();