javascript - regex that replace any chars (except number/, .)

Question

I have a string. I need to parse it, replacing any chars (except numbers (0 to 9),, and ..

How can I do it with javascript?

Tried with :

string.replace(/[a-zA-Z]*/, "");

but seems it doesnt works. Also, I need ANY chars, not only a-Z (also ?, /, white space, and so on, expect, as said, , and .

Answer 1

string.replace(/[^d,.]+/g, "");

should do.

1. [^d.,] means "any character except digit, comma or period", a negated character class.
2. Use + instead of * or you'll have lots of empty matches replaced with empty strings.
3. Use /g so all instances are replaced.