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Posted by Aamir Hasan   on Thursday, October 18, 2012 Total Views:  

 

In this example, you will see how to handle runtime error on client side using java script. Why we need to add try catch in our java script function because to avoid syntax error, a logical error, a read/write error and client error.

<!DOCTYPE html>

<html>

<head runat="server">

    <title></title>

    <script type="text/javascript">

        function calc() {

            try {

                var i = 1 / 0;

                document.getElementById('msg').innerHTML = i;

            } catch (e) {

                document.getElementById('msg').innerHTML = "Error" + e.message;

            }

        }

    </script>

</head>

<body>

    <form id="form1" runat="server">

        <input type="button" value="Click" onclick="calc();"/>

        i/0 = <div id="msg"></div>

    </form>

</body>

</html>

In above example, divided by zero will always give exception undefined. I have put the operation in try catch which will throw exception.

Output

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See live demo

Category: All | Javascript
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Comments (2) -

Jovita Rebman
Jovita Rebman United States
6/28/2015 6:37:26 AM #

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Romeo Savage
Romeo Savage United States
7/13/2015 7:42:26 AM #

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