angularjs – 如果父项具有ng-if,则Angular ng-show不起作用
发布时间:2020-12-17 07:20:50 所属栏目:安全 来源:网络整理
导读:我有一个视图,其中父div具有ng-if,并且一些子元素具有ng-show.当嵌套在具有ng-if的元素下时,ng-show似乎无法正常工作.这是一个Angular bug还是我做错了什么? See this plunker. HTML: !-- with ng-if on the parent div,the toggle doesn't work -- div ng
我有一个视图,其中父div具有ng-if,并且一些子元素具有ng-show.当嵌套在具有ng-if的元素下时,ng-show似乎无法正常工作.这是一个Angular bug还是我做错了什么?
See this plunker.
HTML: <!-- with ng-if on the parent div,the toggle doesn't work --> <div ng-if="true"> <div> visibility variable: {{showIt}} </div> <div ng-show="!showIt"> <a href="" ng-click="showIt = true">Show It</a> </div> <div ng-show="showIt"> This is a dynamically-shown div. <a href="" ng-click="hideIt()">Hide it</a> </div> </div> <br/><br/> <!-- with ng-show on the parent div,it works --> <div ng-show="true"> <div> visibility variable: {{showIt}} </div> <div ng-show="!showIt"> <a href="" ng-click="showIt = true">Show It</a> </div> <div ng-show="showIt"> This is a dynamically-shown div. <a href="" ng-click="hideIt()">Hide it</a> </div> </div> JavaScript: scope.hideIt = function () { scope.showIt = false; }; 谢谢, 安迪
与ng-show不同,ng-if指令创建一个新范围.
因此,如果在子范围内而不是在主范围上设置showIt属性,则在ng内部编写showIt = true. 要修复它,请使用$parent访问父作用域上的属性: <div ng-if="true"> <div> visibility variable: {{showIt}} </div> <div ng-show="!showIt"> <a href="" ng-click="$parent.showIt = true">Show It</a> </div> <div ng-show="showIt"> This is a dynamically-shown div. <a href="" ng-click="hideIt()">Hide it</a> </div> </div> 演示Plunker. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |