Question

I am passing in a parameter called value. I’d like to know if value is a float.
So far, I have the following:

if (!isNaN(value))
{
    alert('this is a numeric value but not sure if it is a float.');
}

How do I go one step further and convert the string to something that can evaluate to a float?

Answer 1

Like this:

if (!isNaN(value) && value.toString().indexOf('.') != -1)
{
    alert('this is a numeric value and I\'m sure it is a float.');
}​