使用 AngularJS 和 jQuery 修改 DOM (slideDown/slideUp) [英] Modifying DOM (slideDown/slideUp) with AngularJS and jQuery

问题描述

我正在尝试使用 AngularJS 实现一个 slideDown/slideUp 动画.我不能使用 CSS3 的过渡(很遗憾)，因为 height 设置为 auto(我不想使用 max-height 解决方法)，所以我正在尝试使用 jQuery 的 slideToggle 方法.

I'm trying to implement a slideDown/slideUp animation with AngularJS. I can't use CSS3's transition (unfortunately) since the height is set to auto (and I don't want to use the max-height workaround), so I'm trying to use jQuery's slideToggle method.

给定以下标记:

<ul>
    <li ng-repeat="entry in data">
        <span>{{entry.title}}</span>
        <a ng-click="clicked($event)" href>more?</a>
        <p>{{entry.description}}</p>
    </li>
</ul>

我在控制器中实现了以下方法:

I implemented the following method in my controller:

$scope.clicked = function($event) {
    var a = jQuery($event.target);
    var p = a.next();
    p.slideToggle();
};

FIDDLE

即使它似乎按预期工作，我也理解修改 DOM 应仅在指令中完成.

Even if it seems to work as expected, I understood that modifying DOM shall be done exclusively within directives.

在阅读了 AngularJS 的文档(我觉得有点轻率恕我直言)后，指令对我来说仍然有点模糊，所以谁能告诉我以下指令是否尊重 AngularJS 的最佳实践?

After having read AngularJS' documentation (which I find a bit light IMHO), directives are still a bit vague to me, so could anyone tell me whether the following directive respects AngularJS's best pratices or not?

.directive('testDirective', [
function() {
    return {
        restrict: 'A',
        scope: {
            entry: '=testDirective'
        },
        template: '<span>{{entry.title}}</span> ' +
                  '<a ng-click="clicked($event)" href>more?</a>' +
                  '<p>{{entry.description}}</p>',
        link: function(scope, element) {
            var p = jQuery(element.find('p'));
            scope.clicked = function($event) {
                p.slideToggle();
            };
        }
    };
}])

FIDDLE

可以改进吗?我允许在指令中使用 jQuery 吗?它是否尊重关注点分离?

Could it be improved? Am I allowed to use jQuery within a directive? Does it respect the separation of concerns?

推荐答案

或者，你可以使用 AngularJS 的 $animate:

Alternatively, you can use AngularJS's $animate:

.animation('.slide', function() {
    var NG_HIDE_CLASS = 'ng-hide';
    return {
        beforeAddClass: function(element, className, done) {
            if(className === NG_HIDE_CLASS) {
                element.slideUp(done); 
            }
        },
        removeClass: function(element, className, done) {
            if(className === NG_HIDE_CLASS) {
                element.hide().slideDown(done);
            }
        }
    }
});

使用 ng-hide 或 ng-show 来显示或隐藏描述.

Use ng-hide or ng-show to show or hide the description.

    <li ng-repeat="entry in data">
        <span>{{entry.title}}</span>
        <a ng-click="expand = !expand" href="#">more?</a>
        <p class="slide" ng-show="expand">{{entry.description}}</p>
    </li>

参见 JSFiddle

附言你必须包含 jquery 和 angular-animate.js

P.S. you must include jquery and angular-animate.js

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