Javascript isNumber / isNumeric function
| Script version: | 1.1 |
| Language: | Javascript |
| Rating: |  |
| Category: | Form validation |
| Description: | This function checks whether an inputted value is a number or not. There are 3 parameters: the first is the string to check, - accepts a string value - this parameter is mandatory the second optional parameter tells the function whether to include non whole numbers, accepts either true or false (true means that decimal points are accepted the third optional parameter tells the function whether to include negative numbers, accepts true or false (true means that negative numbers are valid [note, this script was updated on 16/11/09 to correct the case error in the last line of code. |
| Instructions: | Example call to the function as follows: alert(isNumeric('12345')) // - returns true alert(isNumeric('-12345')) // returns false alert(isNumeric('-12345',true,true)) // returns true alert(isNumeric('12E45')) // returns false alert(isNumeric('0.12345',false)) // returns false alert(isNumeric('0.12345',true)) // returns true |
| Code: | |
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[ isnumber ] [ numeric ] [ parseint ] [View tag cloud]Back to main scripts page
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