Created
February 26, 2013 11:39
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validating numeric or number values from form element
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| This example required jQuery library. |
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| /*! | |
| * @author: Shah Alom | |
| * @website: http://tutpub.com/ | |
| */ | |
| //Check Number Value. For ex: 123.10 or +123.10 | |
| jQuery.fn.isNumber = function(){ | |
| str = $(this).val(); | |
| var myPattern = /^\s*(\+|-)?((\d+(\.\d\d)?)|(\.\d\d))\s*$/;// Check if string is numeric +123 | |
| if( String(str).search(myPattern) == 0 ) { | |
| console.log( str+" is number" ); | |
| return true; | |
| } else { | |
| console.log( str+" is not number" ); | |
| return false; | |
| } | |
| } | |
| //Check Number Value. Fro ex: 123 | |
| jQuery.fn.isNumeric = function(){ | |
| str = $(this).val(); | |
| var myPattern = /^\d+\s*$/; | |
| if( String(str).search(myPattern) == 0 ) { | |
| console.log( str+" is numeric" ); | |
| return true; | |
| } else { | |
| console.log( str+" is not numeric" ); | |
| return false; | |
| } | |
| } |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> | |
| <title>Check Currency Value using jQuery</title> | |
| <script src="jquery-1.8.3.js" type="text/javascript"></script> | |
| <script src="digit.validation.js" type="text/javascript"></script> | |
| <script type="text/javascript"> | |
| jQuery(document).ready(function(){ | |
| $("form").submit( function () { | |
| var isError=false; | |
| if( $($(".number")).isNumber() == false ) { | |
| alert("Invalid Number Value"); | |
| isError=true; | |
| } | |
| if( $($(".numeric")).isNumeric() == false ) { | |
| alert("Invalid Numeric Value"); | |
| isError=true; | |
| } | |
| if(isError==true) { | |
| return false; | |
| } else { | |
| alert("TODO"); | |
| } | |
| }); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <div style="clear:both; width:500px; max-height:50px; display:block; margin:0 auto;" class=""> | |
| <form> | |
| Number Value: <input type="text" name="currency" class="number" value="" /><br /> | |
| Numeric Value: <input type="text" name="numeric" class="numeric" value="" /><br /> | |
| <input type="submit" value="Submit" /> | |
| </form> | |
| </div> | |
| </body> | |
| </html> |
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