type verification

is there a function that checks if the value of givven string is a "float"?

there may be a better way than this, but..
function is_float(str) {
return /^[0-9]+\.[0-9]+$/.test(str);
}

it works...:thumbsup:

is there a way to know how many digits are to the right of the point.

function countdecs(a){return String(a).split(".").pop().split("").length;}
alert(countdecs(234.2309482309482309));