join() isNAN() methods

join() Method in JavaScript

Joins all array elements into a single string separated by the specified delimiter.

Syntax: arrayName.join(param);

JavaScript Code:

<script language="javascript">

function joinfun()

{

 var myArray = new Array('Anil','Singh','Kushinagar');

 alert(myArray.join('>>'));

}

</script>

HTML Code:

<button id=”btnjoin”  onclick="joinfun()">Join Arry Sting</button>

isNAN() Method 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.

Syntax: isNaN('12.30');

JavaScript Code:

<script language="javascript">

function funisNaN()

{

              alert(isNaN('12.30'));

}

</script>

HtML Code:

<button id=”btn_isNaN” onclick="funisNaN()">isNaN</button>