What happens if we re-declare a variable in JavaScript?

On re-declaring a variable in JavaScript, the variable value still remains the same.

Example

Let’s see an example. Here, we are declaring the variable age −

<html>    <body>       <script>          <!--             var age = 20;             var age;             if( age > 18 ){                document.write("Qualifies for driving");             }            //-->       </script>    </body> </html>
Updated on: 2020-06-13T08:40:34+05:30

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