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How to find if argument is numeric or not, using Javascript
Use the code below:
// checks to see whether the input is a numeric string or not also includes "." and "-" function IsNumeric(strString) { var strValidChars = "0123456789.-"; // valid characters for a numeric string var strChar; var result = true; var i = 0 if (strString.length == 0) return false; // check to see if strString consists of valid characters listed in strValidChars while (i < strString.length && result == true) { strChar = strString.charAt(i); if (strValidChars.indexOf(strChar) == -1) return false; i++; } return result; }
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Please feel free to use the comments form below if you have any questions or need more explanation on anything. I recommend thoroughy testing on a production-like test system first before moving to production.
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