Regex to only allow numbers under 10 digits?

Question

I'm trying to write a regex to verify that an input is a pure, positive whole number (up to 10 digits, but I'm applying that logic elsewhere).

Right now, this is the regex that I'm working with (which I got from here):

 ^(([1-9]*)|(([1-9]*).([0-9]*)))$

In this function:

if (/^(([1-9]*)|(([1-9]*).([0-9]*)))$/.test($('#targetMe').val())) {
            alert('we cool')
        } else {
            alert('we not')
        }

However, I can't seem to get it to work, and I'm not sure if it's the regex or the function. I need to disallow %, . and ' as well. I only want numeric characters. Can anyone point me in the right direction?

Answer 1

You can do this way:

/^[0-9]{1,10}$/

Code:

var tempVal = $('#targetMe').val();
if (/^[0-9]{1,10}$/.test(+tempVal)) // OR if (/^[0-9]{1,10}$/.test(+tempVal) && tempVal.length<=10) 
  alert('we cool');
else
  alert('we not');

Refer LIVE DEMO

Answer 2

var value = $('#targetMe').val(),
    re    = /^[1-9][0-9]{0,8}$/;

if (re.test(value)) {
    // ok
}