title: How to disable a button in ANGULARJS
body: <p>i have angularJS 1.5.0-rc.2</p>
  
  <p>I found on the internet that i can use the directive </p>
  
  <pre><code>data-ng-disabled="Expression"
  </code></pre>
  
  <p>But it won't disable a button.</p>
  
  <p>What i tried :</p>
  
  <pre><code>&lt;button data-ng-disabled="false"&gt;Select&lt;/button&gt; // don't work
  &lt;button data-ng-disabled="loaded"&gt;Select&lt;/button&gt; // don't work
  &lt;button data-ng-disabled="loaded != false"&gt;Select&lt;/button&gt; // don't work
  </code></pre>
  
  <p>Loaded is defined in my controller as $scope.loaded = false.</p>
  
  <p>How can i disable a button ? Thanks</p>