Given an input element and the task is to check whether the entered value is numeric or not using jQuery. The jQuery $.isNumeric() method is used to check whether the entered number is numeric or not.
$.isNumeric() method: It is used to check whether the given argument is a numeric value or not. If it is numeric then it returns true Otherwise returns false.
Syntax:
$.isNumeric( argument )
Example 1: This example uses jQuery .isNumeric() method to check entered element is numeric or not.
<!DOCTYPE html> < html > < head > < title > How to check whether a value is numeric or not in jQuery? </ title > < script src = </ script > </ head > < body style = "text-align:center;" > < h1 style = "color:green;" > GeeksForGeeks </ h1 > < h3 > How to check whether a value is numeric or not in jQuery? </ h3 > < hr > < form > < p > Enter any value: < input style = "text-align:center;" type = "text" > </ p > < button type = "button" >Click to Check</ button > </ form > < hr > < script type = "text/javascript" > $(document).ready(function() { $("button").click(function() { var inputVal = $("input").val(); alert($.isNumeric(inputVal)); }); }); </ script > </ body > </ html > |
Output:
- Before entering the value:
- Entering the value:
- After click on the button:
Example 2: This example uses jQuery .isNumeric() method to check entered element is numeric or not.
<!DOCTYPE html> < html > < head > < title > How to check whether a value is numeric or not in jQuery? </ title > < script src = </ script > </ head > < body style = "text-align:center;" > < h1 style = "color:green;" > GeeksForGeeks </ h1 > < h3 > How to check whether a value is numeric or not in jQuery? </ h3 > < hr > < form > < p > Enter any value: < input style = "text-align:center;" type = "text" > </ p > < button type = "button" >Click to Check</ button > </ form > < hr > < h4 ></ h4 > < script type = "text/javascript" > $(document).ready(function() { $("button").click(function() { var inputVal = $("input").val(); var gfg = $.isNumeric(inputVal); if (gfg) { $("h4").text("The Value Entered is Numeric"); } else { $("h4").text("The Value Entered is Not Numeric"); } }); }); </ script > </ body > </ html > |
Output:
- Before Entering the value:
- After entering the value and click on button: