join() Method in JavaScript
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Joins all array elements into a single string separated by the specified delimiter.
Syntax: arrayName.join(param1)
Example:
<html>
<body>
<script language="javascript">
function join_a()
{
var myArray = new Array('Aditya','Anil','Ashish');
alert(myArray.join('>>'));
}
</script>
<button onclick="join_a()">ArrayJoin</button>
</body>
</html>
Output:
isNAN function in JavaScript
The isNaN() function determines whether a value is an illegal number (Not-a-Number). This function returns true if the value is NaN, and false if not.
<html>
<body>
<button onclick="alert(isNaN('12.34'));">False_isNaN</button>
<button onclick="alert(isNaN('Hello'));">True_isNaN</button>
</body>
</html>
Output:
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