AngularJS Exception Handling
While executing any program , if any unwanted situation is occurred , exception occurs . Most of the programming languages & scripting has facility to handle exceptions. JavaScript use try catch finally for exception handling purpose.AngularJS $exceptionHandler detective is used to handle exceptions . $exceptionHandler write exception to the browser console , you can override this functionality. The
Error handling can be customize also.You can use factory method to create an exception.
Custom Error Handleing
Clik Me!
While executing any program , if any unwanted situation is occurred , exception occurs . Most of the programming languages & scripting has facility to handle exceptions. JavaScript use try catch finally for exception handling purpose.AngularJS $exceptionHandler detective is used to handle exceptions . $exceptionHandler write exception to the browser console , you can override this functionality. The
error is written in $log.error by default.
Below is the example of exception handling
Example
<div>
<!DOCTYPE
html>
<html>
<head>
<script
src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script
type="text/javascript">
angular.module("myApp",
[])
.controller("myController",
function
($scope, $exceptionHandler)
{
$scope.myFunction
= function
()
{
try
{
throw
new
Error("Your
have generated an exception");
}
catch
(except)
{
$exceptionHandler(except.message,
"
: Button was Pressed");
}
}
});
</script>
</head>
<body>
<div
ng-app="myApp"
ng-controller="myController">
<button
ng-click="myFunction()">
Click
Here
</button>
</div>
</body>
</html>
</div>
Output :
Error handling can be customize also.You can use factory method to create an exception.
Custom Error Handleing
<!DOCTYPE
html>
<html>
<script
src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<head
runat="server">
<script>
var
app = angular.module('myApp',
[]);
app.factory('$exceptionHandler',
function
()
{
return
function
(exception, cause)
{
alert(
exception.message);
};
});
app.controller('myController',
function
($scope)
{
$scope.GenerateErroe
= function
()
{
throw
{ message: 'error
occurred'
};
}
});
</script>
</head>
<body>
<div
ng-app="myApp"
ng-controller="myController">
<input
type="button"
value="Clik
Me!"
ng-click="GenerateErroe()"
/>
</div>
</body>
</html>
Output :
Clik Me!
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