javascript function for numeric validation Options

[prasanna]

Hi,
I want to validate a form field for numeric value. I have written the following function..

function validateTradeSize() {
if (document.executeForm.tradeSize.value==null || document.executeForm.tradeSize.value.length==0 || isNaN(document.executeForm.tradeSize.value) || Number(document.executeForm.tradeSize.value) > 9999999) {
alert('Trade Size must be a number less than 10000000.');
document.executeForm.tradeSize.value = "";
document.executeForm.tradeSize.focus();
return false;
}
}

This function fails if one or more spaces are entered into tradeSize. Is there any standard trim() function available in javascript?

Thanks,
Prasanna

[Christian J]

Here are some ideas: http://www.irt.org/script/1310.htm