Javascript Regexp test method weird behaviour

Question

I\'ve been trying evaluate a string based in a regular expression, however I noticed a weird behaviour and when I test with the regular expression more than once. The test m

Answer 1

From the MDN documentation:

As with exec() (or in combination with it), test() called multiple times on the same global regular expression instance will advance past the previous match.

So, the second time you call the method, it will look for a match after the first match, i.e. after +56982249953. There is no match because the pattern is anchored to the start of the string (^) (and because there are no characters left), so it returns false.

To make this work you have to remove the g modifier.