JavaScript Regex French Phone Number

I try to define a regex in Javascript who can accept separators like spaces, points, double-points and dashes. My regex is working when there is no separators but when I add space or other separator, it's not working.

I have to precise: this regex is for French phone number (0123456789 or 01.23.45.56.78 or 01 23 45 67 89,...). Also, this regex can accept "+33" who replaces the first "0".

This is my regex

var regex = /^(0|\+33)[1-9]([-.: ]?[0-9]{2}){4}$/;

Can someone tell me what is wrong?

Thank you everyone for yours quick answers!

So as Wiktor Stribiżew said, my regex was good! (Thank you for the link, I didn't know this website).

I have tried a lot of things so sorry for the late reply, but I have found where was my error!

My function is the next one (called by a onblur):

function verifTel(champ) {
     var regex = /^(0|\+33)[1-9]([-.: ]?[0-9]{2}){4}$/;
     if(!regex.test(champ.value)) {
         surligne(champ, true);
         return false;
     } else {
         surligne(champ, false);
         return true;
     }
 }

surligne() is my function for changing the color of the input text. When I wrote 0123456789 my text was green but when I wrote 01.23.45.67.89 my text was red.

BUT my error wasn't in JavaScript... My error was here, in my HTML:

<input id="tel" type="number" placeholder="Téléphone" required onblur="verifTel(this)">

The type="number" accept only numbers and "e" letter. So, I have changed the type to "text" and now it's working!

Thank you everyone for your answers! Have a nice day!