angular.scope.$tryEval.html

<h1>angular.scope.$tryEval</h1>
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  <legend>Work In Progress</legend>
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<h2>Description</h2>
<p>Evaluates the expression in the context of the current scope just like
<a href="#!angular.scope.$eval()"><code>angular.scope.$eval()</code></a> with expression parameter, but also wraps it in a try/catch
block.</p>

<p>If exception is thrown then <code>exceptionHandler</code> is used to handle the exception.</p>

<h2>Example</h2><div ng:non-bindable><pre class="brush: js; html-script: true;">
         var scope = angular.scope();
         scope.error = function(){ throw 'myerror'; };
         scope.$exceptionHandler = function(e) {this.lastException = e; };

         expect(scope.$eval('error()'));
         expect(scope.lastException).toEqual('myerror');
         this.lastException = null;

         expect(scope.$eval('error()'),  function(e) {this.lastException = e; });
         expect(scope.lastException).toEqual('myerror');

         var body = angular.element(window.document.body);
         expect(scope.$eval('error()'), body);
         expect(body.attr('ng-exception')).toEqual('"myerror"');
         expect(body.hasClass('ng-exception')).toEqual(true);
       </pre></div>
<h2>Usage</h2>
<tt ng:non-bindable>
angular.scope.$tryEval(expression, exceptionHandler);
</tt>
<h3>Parameters</h3>
<ul>
    <li><tt>expression</tt> –
      <tt>&#123;string|function()&#125;</tt>
      <tt></tt>
      – Angular expression to evaluate.</li>
    <li><tt>exceptionHandler</tt> –
      <tt>&#123;function()|DOMElement&#125;</tt>
      <tt></tt>
      – Function to be called or DOMElement to be
    decorated.</li>
  </ul>
<h3>Returns</h3>
<tt>&#123;*&#125;</tt> The result of <code>expression</code> evaluation.