JQuery | isNumeric() method
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.
<!DOCTYPE html> < html > < head > < meta charset = "utf-8" > < title >JQuery | isNumeric () method</ title > < script src = "https://code.jquery.com/jquery-3.4.1.js" ></ script > </ head > < body style = "text-align:center;" > < h1 style = "color: green" > w3wiki </ 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 > |
Output:
Example 2: In this example, the isNumeric() method also checks an value to see if it’s a numeric.
<!DOCTYPE html> < html > < head > < meta charset = "utf-8" > < title >JQuery | isNumeric () method</ title > < script src = "https://code.jquery.com/jquery-3.4.1.js" ></ script > </ head > < body style = "text-align:center;" > < h1 style = "color: green" > w3wiki </ 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 > |
Output:
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