有哪位大神用过angularjs?
发布于 8 年前 作者 fantasyKing 4229 次浏览 来自 问答

我想咨询一下,在angular自定义指令中,创建一个可以随时修改的指令呢?比如创建一个bar,可以随时在controller中修改它的属性,或者通过service修改?有些困惑。。。

11 回复

作为用过 angular 的码农,表示看不懂你的问题。坐等大神!

你要修改啥,修改template啊,还是只是修改scope中的东西?

把业务需求场景描述下,问题看不太懂

楼主说的是指令怎么传值吧

ng指令的编译和链接有什么区别?

我也看不懂你的问题

看不懂问题 建议用英文解释下😁😁 自豪地采用 CNodeJS ionic

IonicModule.constant('$ionicNavViewConfig', {
  transition: 'slide-left-right-ios7'
});

IonicModule
.directive('ionNavView', [
  '$ionicViewService',
  '$state',
  '$compile',
  '$controller',
  '$animate',
function( $ionicViewService,   $state,   $compile,   $controller,   $animate) {
  // IONIC's fork of Angular UI Router, v0.2.7
  // the navView handles registering views in the history, which animation to use, and which
  var viewIsUpdating = false;

  var directive = {
    restrict: 'E',
    terminal: true,
    priority: 2000,
    transclude: true,
    controller: function(){},
    compile: function (element, attr, transclude) {
      return function(scope, element, attr, navViewCtrl) {
        var viewScope, viewLocals,
          name = attr[directive.name] || attr.name || '',
          onloadExp = attr.onload || '',
          initialView = transclude(scope);

        // Put back the compiled initial view
        element.append(initialView);

        // Find the details of the parent view directive (if any) and use it
        // to derive our own qualified view name, then hang our own details
        // off the DOM so child directives can find it.
        var parent = element.parent().inheritedData('$uiView');
        if (name.indexOf('@') < 0) name  = name + '@' + ((parent && parent.state) ? parent.state.name : '');
        var view = { name: name, state: null };
        element.data('$uiView', view);

        var eventHook = function() {
          if (viewIsUpdating) return;
          viewIsUpdating = true;

          try { updateView(true); } catch (e) {
            viewIsUpdating = false;
            throw e;
          }
          viewIsUpdating = false;
        };

        scope.$on('$stateChangeSuccess', eventHook);
        // scope.$on('$viewContentLoading', eventHook);
        updateView(false);

        function updateView(doAnimate) {
          //===false because $animate.enabled() is a noop without angular-animate included
          if ($animate.enabled() === false) {
            doAnimate = false;
          }

          var locals = $state.$current && $state.$current.locals[name];
          if (locals === viewLocals) return; // nothing to do
          var renderer = $ionicViewService.getRenderer(element, attr, scope);

          // Destroy previous view scope
          if (viewScope) {
            viewScope.$destroy();
            viewScope = null;
          }

          if (!locals) {
            viewLocals = null;
            view.state = null;

            // Restore the initial view
            return element.append(initialView);
          }

          var newElement = jqLite('<div></div>').html(locals.$template).contents();
          var viewRegisterData = renderer().register(newElement);

          // Remove existing content
          renderer(doAnimate).leave();

          viewLocals = locals;
          view.state = locals.$$state;

          renderer(doAnimate).enter(newElement);

          var link = $compile(newElement);
          viewScope = scope.$new();

          viewScope.$navDirection = viewRegisterData.navDirection;

          if (locals.$$controller) {
            locals.$scope = viewScope;
            var controller = $controller(locals.$$controller, locals);
            element.children().data('$ngControllerController', controller);
          }
          link(viewScope);

          var viewHistoryData = $ionicViewService._getViewById(viewRegisterData.viewId) || {};
          viewScope.$broadcast('$viewContentLoaded', viewHistoryData);

          if (onloadExp) viewScope.$eval(onloadExp);

          newElement = null;
        }
      };
    }
  };
  return directive;
}]);

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