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bennadel/favor-exception-handler.htm

Created July 15, 2015 10:37
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Quick Note: Favor $exceptionHandler() Over $log.error() In AngularJS
Raw
favor-exception-handler.htm
<!doctype html>
<html ng-app="Demo">
<head>
<meta charset="utf-8" />
<title>
Quick Note: Favor $exceptionHandler() Over $log.error() In AngularJS
</title>
</head>
<body ng-controller="AppController">
<h1>
Quick Note: Favor $exceptionHandler() Over $log.error() In AngularJS
</h1>
<p>
<em>View the console</em>.
</p>
<!-- Load scripts. -->
<script type="text/javascript" src="../../vendor/angularjs/angular-1.4.2.min.js"></script>
<script type="text/javascript">
// I control the root of the application.
angular.module( "Demo", [] ).controller(
"AppController",
function provideAppController( $scope, $log, $exceptionHandler ) {
// ** Avoid. **
// --
// Using the $log.error() method will safely log the error to the console
// if it is available. If the console is not available, the error will
// just be swallowed quietly.
try {
throw( new Error( "Something went boom."))
} catch ( error ) {
$log.error( error );
}
// ** Recommended. **
// --
// By default, the $exceptionHandler() service does the same thing as
// $log. The default implementation actually just turns around and calls
// $log.error() internally. However, the entire framework defers to the
// $exceptionHandler() for all try / catch blocks which makes it a
// perfect place to track errors. By favoring $exceptionHandler() over
// the $log.error() method, you keep in alignment with the rest of the
// code and make your errors more readily available.
try {
throw( new Error( "Something went boom."))
} catch ( error ) {
$exceptionHandler( error );
}
}
);
</script>
</body>
</html>
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