javascript number validation?

Question

is there any function for integer validating?

Answer 1

Yes, there are. If you just want to validate that the entered value is a number then you would use isNum(x).... For instance:

if (isNum(x)){do this....}

This returns a boolean value (t/f)

Answer 2

function valNum(strToTest) {
if (strToTest == parseInt(strToTest)) {
return true;
} else {
return false;
}
}

you can also use parseFloat() if you are using decimals. i.e. "123.4567"