message: refactor: change const to var
diff: @@ -179,11 +179,11 @@ GradientManager.prototype.updateDom = function (gradient, dom) {
  var stop = this.createElement('stop');
  stop.setAttribute('offset', colors[i].offset * 100 + '%');
  - const color = colors[i].color;
  + var color = colors[i].color;
  if (color.indexOf('rgba' > -1)) {
  // Fix Safari bug that stop-color not recognizing alpha #9014
  - const opacity = colorTool.parse(color)[3];
  - const hex = colorTool.toHex(color);
  + var opacity = colorTool.parse(color)[3];
  + var hex = colorTool.toHex(color);
  // stop-color cannot be color, since:
  // The opacity value used for the gradient calculation is the
  