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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: 13-Jun-2020
112 Views
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