为什么我的ng-if无法正常工作?它没有隐藏div [英] Why is my ng-if not working? It's not hiding the div

问题描述

在我的Angular应用程序中，我希望某个div在变量为true时显示，而在变量为false时消失.

In my Angular app, I want a certain div to appear if a variable is true, and to disappear if it is false.

但是，它不起作用. 看我的小提琴

However, it is not working. See my Fiddle

有人可以帮助我理解为什么吗?

Can anyone help me understand why?

HTML

<div ng-controller="MyCtrl">
    <div id="newProjectButton" class="project" ng-click="newProjectActive()" ng-if="!creatingNew">
            <h1> + </h1>
            <h3> New Project </h3>
    </div>
    <div id="newProjectActive" class="project" ng-if="creatingNew">
        <form>
            <input name="name" ng-model="newProjectName" type="text"></input>
            <button ng-click="newProject()" type="submit" class='btn btn-primary'>Save</button>
        </form>
    </div>
</div>

JS

var myApp = angular.module('myApp', []);

function MyCtrl($scope) {
    $scope.name = 'Superhero';

    $scope.creatingNew = false;

    $scope.newProjectActive = function () {
        $scope.creatingNew = true;
    }

    $scope.newProject = function () {
        alert($scope.newProjectName);
    }

}

推荐答案

首先，当我看着您的小提琴时，那里有您示例的旧版本，

First, when I looked at your fiddle, there was older version of your example there,

第二个，实际上可能是一个原因，在该示例中，您在1.0.1版中使用了angular，我相信该版本未实现ng-if.更新到最新版本将解决您的问题

Second, which actually may be a reason, is in that example you were using angular in version 1.0.1, and i believe that version didn't implement ng-if. Updating to latest version will fix your problem

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