AngularJS源码之ng-style

ng-style源码

scope.$watch(attr.ngStyle, function ngStyleWatchAction(newStyles, oldStyles) {
  if (oldStyles && (newStyles !== oldStyles)) {
    forEach(oldStyles, function(val, style) {
      element.css(style, '');
    });
  }
  if (newStyles)
    element.css(newStyles);
}, true);