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JQuery | isNumeric() method
  • Last Updated : 27 Apr, 2020

This isNumeric() Method in jQuery is used to determines whether its argument represents a JavaScript number.

Syntax:

jQuery.isNumeric( value )

Parameters: The isNumeric() method accepts only one parameter that is mentioned above and described below:

  • value: This parameter is the value to be tested.

Return Value: It returns the boolean value.

Below examples illustrate the use of isNumeric() method in jQuery:



Example 1: In this example, the isNumeric() method checks an value to see if it’s a numeric.

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JQuery | isNumeric () method</title
  
</head>
<body style="text-align:center;"
      
    <h1 style="color: green"
        GeeksForGeeks 
    </h1
      
    <h3>JQuery | isNumeric () method</h3>
    <b>Check the following value are Numeric or not </b>
    <br>
    <p></p>
    <script>
      
    //document.location
    $( "p" ).append("123 : " +$.isNumeric( 123 ) 
                +"<br>" + "0 : " + $.isNumeric( "0" )
                +"<br>" + "0x6F : " +$.isNumeric( "0x6F" )
                +"<br>" + "3e7 : " +$.isNumeric( "3e7" )
                +"<br>" + "3.14 : " +$.isNumeric( "3.14" )
                +"<br>" + "-1 : " + $.isNumeric( -1 ));
      
    </script>
</body>
</html>                                                

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Output:

Example 2: In this example, the isNumeric() method also checks an value to see if it’s a numeric.

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JQuery | isNumeric () method</title
<script src=
  
</head>
<body style="text-align:center;"
      
    <h1 style="color: green"
        GeeksForGeeks 
    </h1
      
    <h3>JQuery | isNumeric () method</h3>
    <b>Check the following value are Numeric or not </b>
    <br>
    <p></p>
    <script>
      
    //document.location
    $( "p" ).append("undefined  : " +$.isNumeric( undefined  ) 
                +"<br>" + "Infinity  : " + $.isNumeric( "Infinity " )
                +"<br>" + "true  : " +$.isNumeric( "true " )
                +"<br>" + "null  : " +$.isNumeric( "null " )
                +"<br>" + "NaN  : " +$.isNumeric( "NaN " )
                +"<br>" + "-0x42 : " + $.isNumeric( "-0x42" ));
      
    </script>
</body>
</html>                                                                                                

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Output:




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