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JavaScript Tutorial

void keywords In JavaScript
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JavaScript we can use void keywords in many ways Basically in JavaScript it is an unary operator. this void keyword defines an expression which will be evaluated without returning a value. It is most commonly used for client side JavaScript

Example :

<html>
<head>
</script>
<p> Click on the r4r tutorial</p>

    <a href="javascript:void(alert('r4r is a best tutorial'))">r4r -tutorial</a>

</head>
</html>

Output :

Click on the r4r tutorial

r4r -tutorial
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